JP2007295839A - Fence for transfer regulation of sea urchin, apparatus using the same for culture of sea urchin and invasion regulating apparatus for sea urchin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fence for transfer regulation of sea urchins regulating transfer of sea urchins for a long time and to provide an apparatus using the same for culturing sea urchins and an invasion regulating apparatus for sea urchins. <P>SOLUTION: The invention relates to the fence for transfer regulation of sea urchins comprising a horizontal base plate almost perpendicularly installed on the upper part of the fence body, and multiple needle like articles hung down from the horizontal base plate almost parallelly to the fence body, and the apparatus using the same for culture of sea urchins, in which the fences for transfer regulation of sea urchins are installed to surround a predetermined area as connected each other setting the needle like articles inside. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a movement regulating fence for regulating the movement of sea urchins, an aquaculture device for regulating and culturing so that sea urchins do not escape using the fence, and sea urchins invaded by sea urchins using the same. The present invention relates to an intrusion control device for preventing damage to food and algae.

  There was a problem that seaweeds such as sea urchins gathered and caused food damage when trying to grow seaweed beds in the sea, making it impossible to grow seaweed beds. Moreover, when sea urchins were cultivated in the sea in a natural state, there was a problem that sea urchins escaped and could not be cultivated.

Recently, in order to solve such a problem, an apparatus for regulating the movement of sea urchins has been studied. For example, there has been proposed a food damage prevention tool for creating a seaweed basin comprising a spine for preventing the entry of algae and an attachment for attaching the spine to a seaweed slab member or the like (for example, a patent) Reference 1).
JP-A-9-285250

  However, the above-mentioned food damage prevention tool for creating an algae basin is attached to an algae-growing container or rope, prevents sea urchins from approaching the algae-growing container or rope at the spine, and grows algae in the algae-growing container or rope As a result, it was not possible to create an algae pond or a sea urchin farm.

  The present inventor used a movement control mat for restricting the movement of sea urchins in order to create a seaweed basin in which sea urchins were prevented from entering or to create a sea urchin farm in which sea urchins were prevented from escape. Proposed entry / exit fences.

That is, a movement restriction mat for restricting the movement of sea urchins relative to a predetermined area. Needle-like bodies are erected in a row at predetermined adjacent intervals on a mat-like base body, and the row-like needle-like bodies are provided in a predetermined area. The movement restriction mat and the movement, wherein the movement restriction mat is arranged in parallel with at least three rows at a row interval, and the predetermined row interval has a parallel density gradient composed of a dense row interval and a sparse row interval. It is an access restriction fence in which a plurality of restriction mats are continuously arranged so as to surround a predetermined area, and the standing direction of the needle-shaped body in the arrangement state is either outside or inside with respect to the predetermined area It is an access restriction fence characterized by facing (see Patent Document 2).
JP 2005-333935 A

  In the above-mentioned entry / exit fence, the needle-shaped body is erected to either the outer side or the inner side with respect to the predetermined area, so that immediately after installation, sea urchins may be disturbed by the needle-shaped body and cross the fence. Unable to move sea urchins.

  However, when time passes, animals and algae adhere to the needles. If animals or algae attach to needles that stand up to either the outside or the inside of the fence, the needles are no longer like rocks in the sea and sea urchins can easily get over. Yes, it will not be possible to regulate the entry and exit of sea urchins.

  In view of the above-described drawbacks, an object of the present invention is to provide a sea urchin movement restriction fence capable of restricting sea urchin movement over a long period of time, and a sea urchin aquaculture device and an intrusion restriction apparatus using the same.

  In the sea urchin movement restriction fence according to claim 1, a horizontal substrate is installed substantially perpendicular to the fence body near the upper portion of the fence body, and a large number of needle-like bodies are substantially parallel to the fence body. It is drooping.

  Examples of the material constituting the fence body, the horizontal substrate, and the needle-like body include metal, plastic, plastic-coated metal, and wood. However, since the material is used in the sea, a plastic that does not easily rust or rot is used. Preferably used.

  Examples of the plastic include high density polyethylene resin, medium density polyethylene resin, low density polyethylene resin, linear low density polyethylene resin, polypropylene resin, ethylene-propylene copolymer, ethylene-pentene-1 copolymer, ethylene-acetic acid. Vinyl copolymer, ethylene- (meth) acrylic ester copolymer, ethylene-vinyl chloride copolymer, ethylene-propylene-butene copolymer, vinyl chloride resin, chlorinated vinyl chloride resin, polyester resin, polycarbonate resin, etc. Is mentioned.

  The fence body, the horizontal substrate, and the needle-like body may be integrally manufactured by, for example, an injection molding method, or may be bonded with an adhesive after molding each, or by a locking member or the like. It may be fixed.

  The fence body and the horizontal substrate may be plate-like bodies, but if they are plate-like bodies, sea urchins will adsorb and move easily, and they will be easily affected by waves when installed in the sea. A net-like body is preferable because it is difficult to fix at a fixed position.

  When using a movement control fence as a sea urchin aquaculture device or a sea urchin intrusion control device, a plurality of movement control fences are connected to prevent sea urchins from moving between adjacent movement control fences. The shape of the fence body is preferably square or rectangular.

  Also, the shape of the horizontal substrate is preferably square or rectangular so that the gap is not opened when using a plurality of movement restriction fences connected in parallel, but when there is a bent portion, the angle at which the gap is not opened at the bent portion A trapezoid having

  The horizontal board has a large number of needles hanging substantially parallel to the fence body, that is, when a sea urchin movement restriction fence is installed on the seabed, the needles are hung on the seabed. Stands on the bottom.

  The shape of the needle-shaped body is not particularly limited. However, if the side wall of the needle-shaped body is flat, it is preferable to have a cylindrical shape because sea urchins are easily adsorbed. It is preferable because it is difficult to get over by adsorbing.

  The length of the needle-like body may be appropriately determined depending on the size of the sea urchins whose movement is to be restricted, but is generally preferably 50 mm or more, and more preferably 100 to 200 mm.

  Sea urchins move by using thorns when moving, and by stretching the abdominal tube leg and adsorbing at the tip. Therefore, in order to prevent sea urchins from getting over the movement restriction fence, if the interval between the needle-like bodies is made smaller than the size of the sea urchins, the sea urchins cannot move between the needle-like bodies. The abdominal tube legs must be used to get over the tip of the body and effectively get over the movement restriction fence.

  In addition, small sea urchins that can pass through the gaps between the needle-like bodies, if the interval between the needle-like bodies is wider than the interval that can spread the abdominal tube legs of the sea urchins, the sea urchins are adjacent to the needle-like You will not be able to move to your body, and you will effectively be unable to get over the movement restriction fence.

  Therefore, the needle-shaped body is installed so that there is a narrow space part where sea urchins cannot adsorb to the needle-shaped body and pass through the needle-shaped body, and a part wider than the space where the abdominal tube leg of the sea urchin can be spread. It is preferable.

  That is, the needle-like bodies are suspended in rows at predetermined intervals, and one or more rows of dense rows hanging at dense predetermined intervals and one or more sparse rows hanging at sparse predetermined intervals are suspended. Is preferred. Further, it is preferable that the interval between the dense and sparse columns and the interval between the sparse and sparse columns are substantially the same as the predetermined sparse intervals.

  The dense predetermined intervals and the sparse predetermined intervals may be appropriately determined depending on the size of the sea urchins to be restricted from moving. For example, in the case of grown gooses, the shell diameter is generally 60-90 mm, and the length of the abdominal spines is 20-65 mm.

  Accordingly, the dense interval is preferably less than 60 mm, more preferably 20 to 40 mm, and the sparse interval is wider than the dense interval and preferably 40 mm or more, more preferably 60 mm or more, still more preferably 65 to 90 mm. is there.

  In order to restrict the movement of small gauze, one or more rows of first dense rows with an interval of less than 20 mm, second dense rows with an interval of 20 to 40 mm, and sparse rows with an interval of 60 mm or more are arranged side by side. It is preferable to do this. In this case, the interval between the first dense row and the second dense row is preferably a predetermined interval of the first dense row to a predetermined interval of the second dense row. It is preferable that the intervals between the sparse columns and the sparse columns and the intervals between the sparse columns are substantially the same as the predetermined intervals of the sparse columns.

  Since the sea urchin movement restriction fence of the present invention is installed on the sea floor, if there are irregularities or stones on the sea floor, a space is formed at the bottom and the sea urchin movement cannot be restricted. It is preferable that an unevenness adjusting member is installed in the vicinity.

  As the unevenness adjusting member, any conventionally known member can be used, for example, a flexible woven fabric, non-woven fabric, rubber sheet, plastic sheet, etc., and if fixed near the lower end of the movement restriction fence Although it is good, a flexible uneven-shaped acicular body is preferable.

  When the fence body is made of the plastic, it is preferable to form the unevenness adjusting needle-like body integrally with the bottom of the fence body when the fence body is manufactured. In the case where the unevenness adjusting needle is made of the same plastic, flexibility may be provided by making it thinner or thinner. Moreover, you may form with flexible plastics, such as rubber | gum.

  The length of the acicular body for adjusting the unevenness is not particularly limited, and may be appropriately determined depending on the unevenness of the seabed, the size of the existing stone, and the like, and is generally preferably 50 to 200 mm. Further, the interval between adjacent non-land adjustment needles is preferably an interval that can regulate the movement of sea urchins, and is generally 60 mm or less.

  Since the sea urchin movement restriction fence of the present invention is installed on the seabed, a metal or stone weight is attached near the lower end of the fence body so that it is easy to install and is not moved or destroyed by waves. Is preferred. The weight can be attached by, for example, a method of adhering with an adhesive, a method of binding with a string, a plastic-coated wire, or the like, a locking member that can fit the weight into the fence body is installed, and the weight is inserted into the locking member. And fixing method.

  The sea urchins movement restriction fences of the present invention are preferably provided with locking members so that they can be fixed to each other on the sides of the fence body so that they can be easily connected to each other. Any conventionally known locking member can be used as the locking member, and examples thereof include a velvet fastener, a locking member including a fitting member and a receiving member, and the like.

  In addition, when the movement restriction fences for sea urchins of the present invention are installed so that the needle-shaped bodies face outward and surround a predetermined area, if all the needle-shaped bodies are suspended downward from the horizontal substrate, the adjacent movement Since the needle-like body does not exist at the place where the restriction fence is bent, and the effect of restricting the movement of the sea urchin is reduced, the needle-like body at least at one end of the sea urchin movement restriction fence is It is preferable that the needle-like body is hung downward and obliquely downward, and the needle-like bodies that are hung downward and obliquely outward are preferably arranged so as to face each other.

  The sea urchin culture device according to claim 9 is characterized in that the sea urchin movement restriction fences according to claims 1 to 8 are connected with the needle-like body side inward so as to surround a predetermined area. .

  In the sea urchin aquaculture device, the sea urchin movement restriction fence according to any one of claims 1 to 7 is connected so as to surround the predetermined area with the needle-like body side inward. The sea urchins that are present in the sea are restricted from moving out of the predetermined area by the needles, and the sea urchins cannot escape outside the predetermined area and can be cultivated in the predetermined area.

  When the stoppers are installed at both ends of the sea urchin movement restriction fence, the movement restriction fences can be easily connected to each other by locking the hooks of the adjacent movement restriction fences. It is preferable because an aquaculture device can be installed.

  In this case, in order to form a sea urchin aquaculture device using only the sea urchin movement restriction fence, sea urchins having horizontal substrates of different shapes so that adjacent horizontal substrates do not collide with each other so that the connection is not disturbed. It is necessary to prepare the movement restriction fences and to combine them to form a sea urchin aquaculture equipment.

  The shape of the horizontal substrate is trapezoidal, the fence body is installed on the long side of the trapezoid, and the sea urchins movement restriction fence has locking devices installed on both ends of the long side. By connecting sea urchin movement restriction fences with needle-like bodies hanging diagonally downward toward the outside, adjacent horizontal substrates do not collide and the connection is not obstructed, and one kind of sea urchin moves. A sea urchin aquaculture device of any shape can be formed with a regulated fence.

  Since the sea urchin aquaculture equipment is installed on the sea floor as it is, it is moved or destroyed by waves, so it is preferable to fix it to the sea floor with a fixing member such as a pile, a nail, etc., consisting of a holding part and a nail part. It is preferable that the nail portion of the substantially Γ-shaped fixing member is struck against the sea bottom along the fence body of the movement restriction fence, and the movement restriction fence is fixed to the sea floor by pressing the horizontal substrate toward the sea bottom with the holding portion.

  It is also preferable to fix the sea urchins movement restriction fence and the fixing member holding part or the nail part so that the sea urchin movement restriction fence and the fixing member are not detached. As a fixing method, for example, a method of tying with a string, a plastic-coated wire, etc., a locking member capable of fitting a holding part of a fixing member or a nail part is installed on a sea urchin movement restriction fence, and fixed to the locking member. For example, a method of inserting and fixing a member may be used.

  The sea urchin entry restriction device according to claim 11 is connected to the sea urchin movement restriction fence according to any one of claims 1 to 7 with the needle-like body side outward so as to surround a predetermined area. The movement restriction fences on both sides of the bent portion are the movement restriction fences according to claim 7, wherein the needle-like bodies hanging obliquely downward toward the outside are connected so as to face each other. .

  Since the sea urchins intrusion restriction device is connected to the sea urchins movement restriction fence according to any one of claims 1 to 7 with the needle-like body side outside so as to surround a predetermined area, Sea urchins that exist outside the predetermined area are restricted from moving from outside the predetermined area into the predetermined area by the needles. Further, the movement restricting fences on both sides of the bent part are the movement restricting fences according to claim 7, and the needle-like bodies hanging obliquely downward toward the outside are connected so as to face each other. There is a needle-shaped body, and sea urchins outside the predetermined area are restricted from moving from the predetermined area to the predetermined area by the needle-shaped body. Therefore, sea urchins cannot enter the sea urchins intrusion control device from outside the sea urchins intrusion control device, and when the algae grows in the sea urchins intrusion control device, the seaweed is prevented from being eaten. Can do.

  When the stoppers are installed at both ends of the sea urchin movement restriction fence, the movement restriction fences can be easily connected to each other by locking the hooks of the adjacent movement restriction fences. Since an intrusion control device can be installed, it is preferable.

  The sea urchin intrusion control device, when installed on the sea floor as it is, is moved or destroyed by waves, so it is preferably fixed to the sea floor with a fixing member such as a pile or nail, and consists of a holding part and a nail part. It is preferable that the nail portion of the substantially Γ-shaped fixing member is struck against the sea bottom along the fence body of the movement restriction fence, and the horizontal board is pressed toward the sea bottom by the holding portion to fix the movement restriction fence to the sea floor.

  In addition, it is preferable that the movement control fence of the sea urchins and the holding member or the nail part of the fixing member are tied and fixed with a string, a plastic-coated wire or the like so that the movement control fence of the sea urchins and the fixing member are not detached.

  The structure of the sea urchins movement restriction fence according to claim 1 is as described above, and a horizontal substrate is installed substantially perpendicular to the fence body near the top of the fence body, and a large number of needle-like bodies are provided on the horizontal substrate. Is suspended substantially parallel to the fence body, sea urchins cannot get over the movement restriction fence, and the movement of sea urchins can be effectively restricted.

  In addition, since the needle-like body is suspended in the direction of the seabed, it is difficult for algae and dust to adhere to it, and even if it passes for a long time, sea urchins are difficult to get over the movement restriction fence and effectively regulate the movement of sea urchins. be able to.

  The sea urchin aquaculture device according to claim 8 is connected to the sea urchin movement restriction fence according to any one of claims 1 to 7 so as to surround a predetermined area with the needle-like body side inward. The sea urchins existing in the predetermined area are restricted from moving out of the predetermined area by the needles, and the sea urchins cannot escape outside the predetermined area and can be cultivated in the predetermined area.

  The sea urchin entry restriction device according to claim 11 is connected to the sea urchin movement restriction fence according to any one of claims 1 to 7 with the needle-like body side outward so as to surround a predetermined area. Therefore, sea urchins existing outside the predetermined area are restricted from moving from the predetermined area to the predetermined area by the needles. Further, the movement restricting fences on both sides of the bent part are the movement restricting fences according to claim 7, and the needle-like bodies hanging obliquely downward toward the outside are connected so as to face each other. There is a needle-like body, and sea urchins existing outside the predetermined area are restricted from moving from the predetermined area to the predetermined area by the needle-like body. Therefore, sea urchins cannot enter the sea urchins intrusion control device from outside the sea urchins intrusion control device, and when the algae grows in the sea urchins intrusion control device, the seaweed is prevented from being eaten. Can do.

  Next, the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an example of a sea urchin movement restriction fence of the present invention, FIG. 2 is a plan view, FIG. 3 is a bottom view, and FIG. 4 is a side view.

  In the figure, reference numeral 1 denotes a rectangular fence body, which includes an upper frame portion 111, a right frame portion 112, a lower frame portion 113, and a left frame portion 114, and is formed in a square-shaped frame body 11 and the frame body 11. The lattice portion 12 is formed.

  Three locking tools 13 having through holes 131 penetrating from the upper side to the lower side are provided on the side surface of the right side frame portion 112, and a fitting portion 141 that can be fitted into the through hole 131 is provided on the side surface of the left side frame portion 114. Three locking tools 14 projecting downward are installed.

  A weight 15 made of rod-shaped plastic-coated iron is fixed to the side surface of the lower frame portion 113. Further, a flexible uneven needle 16 is suspended from the lower surface of the lower frame 113. The cross-sectional shape of the flexible uneven adjustment needle 16 is a flat shape whose major axis is parallel to the length direction of the lower frame 113, and the major part has a major axis of 4 mm and a minor axis of 2 mm. Further, the length of the non-land adjustment needle-like bodies 16 is 50 mm, and the interval between the non-land adjustment needle-like bodies 16 is 17 mm.

  A horizontal substrate 2 is installed vertically on the fence main body 1 with respect to the fence main body 1. The horizontal substrate 2 includes a square-shaped frame body 21 and a lattice portion 22 formed in the frame body 21. Needle-like bodies 3... Are parallel to the fence main body 1 at the intersection of the lattice portion 22 and the intersection on the front side of the lattice portion 22 and the frame body 21 (the intersection of the upper side of the frame body 21 and the lattice portion 22 in FIG. 3). It is drooping.

  The needle-like body 3 is a circular cone whose base is 4 mm in diameter, and has a length of 100 mm. A first row of needle-like bodies 3 hangs at the intersection of the lattice portions 22, and a second row of needle-like bodies 3 hangs at the front side intersection of the lattice portions 22 and the frame body 21. The distance between the needle-like bodies 3 in the first row and the second row, the interval between the needle-like bodies 3 in the first row and the needle-like bodies 3 in the second row, and the distance between the needle-like bodies 3 in the first row and the fence body 1 All intervals are 36 mm.

  FIG. 5: is a front view which shows the example from which the movement restriction | limiting fence of sea urchins of this invention differs. Of the needle-like bodies 3 suspended from the horizontal substrate 2, needle-like bodies 31 are suspended obliquely downward from the same base of the needle-like bodies 3 at both ends toward the outside. The other points are the same as in FIGS.

  FIG. 6 is a plan view showing still another example of the sea urchin movement restriction fence of the present invention, and FIG. 7 is a bottom view. In the figure, reference numeral 2 denotes a horizontal substrate. The horizontal substrate 2 includes a square-shaped frame body 23 and a lattice portion 24 formed in the frame body 23. The lattice portion 24 is composed of a lattice portion 241 having a narrow interval and a lattice portion 242 having a wide interval that is twice the narrow interval, and the intersection of the lattice portions 241 having a narrow interval is one row, and is installed on the fence body 1 side. ing. There are one row of intersections between the wide-interval lattice portions 242 and intersections between the wide-interval lattice portions 242 and the front frame body 23 (upper side of the frame body 23 in FIG. 7).

  The needle-like bodies 3... Hang down in parallel with the fence body 1 at the intersections of the narrowly spaced lattice portions 241 to form the first row needle-like bodies 32, and the needle-like bodies 3 at the intersections of the widely spaced lattice portions 242. Are hung in parallel with the fence body 1 to form the second row of needle-like bodies 33, and the needle-like bodies 3... A third row needle-like body 34 is formed in parallel with 1.

  The needle-like body 3 is a circular cone whose base is 4 mm in diameter, and has a length of 100 mm. The interval between the needle-like bodies 3 in the first row needle-like bodies 32 and the interval between the first row needle-like bodies 32 and the fence body 1 are 36 mm, and in the second row needle-like bodies 33 and the third row needle-like bodies 34. The interval between the needle-like bodies 3 and the interval between the first-row needle-like body 32 and the second-row needle-like body 33 and between the second-row needle-like body 33 and the third-row needle-like body 34 are 76 mm.

  FIG. 9 is a plan view showing an example of a sea urchin entry restriction device of the present invention, and FIG. 10 is a schematic side view showing a state where a sea urchin movement restriction fence is fixed to the seabed. The eight sea urchin movement restriction fences 10 shown in FIG. 5 are connected so as to surround the predetermined area with the needle-like body 3 outside, and are fixed to the seabed 5 by the fixing members 4. An algae breeding ground has been formed.

  Adjacent movement restriction fences 10, 10 are connected by fitting the fitting portion 141 of the locking tool 14 of one movement restriction fence 10 into the through hole 131 of the locking tool 13 of the other movement restriction fence 10. .

  The Γ-shaped fixing member 4 includes a holding portion 41 and a nail portion 42. The fixing member 4 and the lattice portion 22 of the horizontal substrate of the movement restriction fence 10 and the lattice portion 12 of the fence body 1 of the nail portion 42 movement restriction fence 10 are provided. A sea urchin intrusion control device is fixed to the seabed by fixing with plastic bands 6... And driving a nail portion 42 into the seabed 5.

  FIG. 11 is a plan view showing an example of a sea urchin culture apparatus. 1-4, the movement restriction fences 10 for sea urchins shown in FIGS. 1 to 4, the movement restriction fence 20 for sea urchins having a horizontal trapezoidal shape, and the shape of the horizontal board are the same. The trapezoidal four sea urchin movement restriction fences 30 are connected to the outside so that the needle-shaped body 3 is located inside and outside, and is fixed to the seabed 5 by a fixing member (not shown). Sea urchin aquaculture equipment has been formed. The connection method of the movement control fences 10, 20, and 30 and the fixing method to the seabed are the same as the sea urchins intrusion control device.

It is a front view which shows an example of the movement control fence of sea urchins of this invention. It is a top view of the movement restriction fence of sea urchins of FIG. It is a bottom view of the movement control fence of sea urchins of FIG. FIG. 2 is a side view of the sea urchin movement restriction fence of FIG. 1. It is a front view which shows the example from which the movement control fence of sea urchins of this invention differs. It is a top view which shows the example from which the movement control fence of sea urchins of this invention differs. It is a bottom view of the movement control fence of sea urchins of FIG. FIG. 7 is a side view of the sea urchin movement restriction fence of FIG. 6. It is a top view which shows an example of the intrusion control apparatus of the sea urchins of this invention. It is a side surface schematic diagram which shows the state by which the movement control fence of sea urchins was fixed to the seabed. It is a top view which shows an example of the sea urchin culture apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fence main body 2 Horizontal substrate 3 Needle-like body 4 Fixing member 5 Seabed 6 Plastic band 10, 20, 30 Sea urchin movement restriction fence 11, 21, 23 Frame body 12, 22, 24 Lattice part 13, 14 Locking tool 15 Weight 16 Non-land adjustment needle 241 Narrowly spaced lattice 242 Widely spaced lattice 32 First row needle 33 Second row needle 34 Third row needle

Claims (13)

  The movement of sea urchins, characterized in that a horizontal board is installed substantially perpendicular to the fence body near the top of the fence body, and a large number of needles are suspended substantially parallel to the fence body on the horizontal board. Regulatory fence.   The sea urchin movement restriction fence according to claim 1, wherein the fence body is a lattice-shaped body.   3. The sea urchins movement restriction fence according to claim 1, wherein the horizontal substrate is a lattice-like body.   Needle-like bodies are suspended in rows at a predetermined interval, and one or more rows of dense rows hanging at dense predetermined intervals and one or more sparse rows hanging at sparse predetermined intervals are suspended. The movement restriction fence for sea urchins according to any one of claims 1 to 3.   The sea urchins according to any one of claims 1 to 4, characterized in that a flexible non-land adjustment needle-like body projects downwardly at a predetermined interval near the lower end of the fence body. Movement restriction fence.   The movement restriction fence for sea urchins according to any one of claims 1 to 5, wherein a weight is provided near the lower end of the fence body.   The sea urchins movement restriction fence according to any one of claims 1 to 6, wherein at least one needle-like body is suspended obliquely downward toward the outside.   A sea urchin aquaculture device, wherein the sea urchin movement restriction fence according to any one of claims 1 to 7 is connected with the acicular body side inward so as to surround a predetermined area.   A locking device is installed at both ends of the sea urchin movement control fence, and the movement control fence is connected by locking the locking devices of adjacent movement control fences. Item 9. A sea urchin culture device according to item 8.   The nail part of the fixed member consisting of a holding part and a nail part is fixed to the sea floor along the fence body of the movement control fence, and the horizontal board is pressed toward the sea bed by the holding part to move the movement control fence to the sea bed. The sea urchin aquaculture apparatus according to claim 8 or 9, wherein the sea urchin culture apparatus is fixed to the sea urchin.   The movement restriction fence for sea urchins according to any one of claims 1 to 7 is connected with the needle-like body side outward so as to surround a predetermined area, and the movement restriction fences on both sides of the bent portion are claimed. Item 8. The movement restricting fence according to Item 7, wherein the needle-shaped bodies hanging obliquely downward toward the outside are connected so as to face each other.   A locking device is installed at both ends of the sea urchins movement control fence, and the movement control fences are connected by locking the locking devices of adjacent movement control fences. Item 11. A sea urchin entry control device according to Item 11.   The nail part of the fixed member consisting of a holding part and a nail part is fixed to the sea floor along the fence body of the movement control fence, and the horizontal board is pressed toward the sea bed by the holding part to move the movement control fence to the sea bed. The sea urchin entry control apparatus according to claim 11 or 12, wherein the sea urchin entry control apparatus is fixed to the sea urchin.

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