A cephalopod rearing cage capable of maintaining a cephalopod alive, wherein at least a portion of the cephalopod rearing cage is constituted by using a mesh sheet of not less than 4 mesh. Also provided is a cephalopod escape prevention sheet capable of maintaining a cephalopod alive, wherein at least a portion of the cephalopod escape prevention sheet is constituted by using a mesh sheet of not less than 4 mesh.

A crawfish trap bait guard which, in use, is mounted upon the staking rod of a crawfish trap, inside the mesh of the crawfish trap, above the floor of the trap, and below the water line. The crawfish trap bait guard encloses the bait in such a way as to prevent the access of birds and fish to the bait, while allowing crawfish within the trap to obtain managed portions of the bait by reaching through calibrated open areas distributed around the crawfish trap bait guard so as to allow a large number of crawfish to feed at the same time.

A crawfish trap bait guard which, in use, is mounted upon the staking rod of a crawfish trap, inside the mesh of the crawfish trap, above the floor of the trap, and below the water line. The crawfish trap bait guard encloses the bait in such a way as to prevent the access of birds and fish to the bait, while allowing crawfish within the trap to obtain managed portions of the bait by reaching through calibrated open areas distributed around the crawfish trap bait guard so as to allow a large number of crawfish to feed at the same time.

Provided is a method for manufacturing a fishing net formed from a plastic net that can be handled by winding or folding although the net has plastic rigidity. The fishing net is manufactured by (1) a step of preparing a multifilament yarn formed by bundling a plurality of core-sheath type composite filaments, in each of which a core component is made of polyethylene terephthalate and a sheath component is made of polyolefin, (2) a step of preparing a yarn thread obtained by paralleling a plurality of the multifilament yarns, (3) a step of twisting or braiding four yarn threads 11, 12, 13, 14 to obtain a net constructed with strands 1 and intersections 2, (4) a step of heat-treating the net under without pressure to melt the sheath component of the yarn threads 11, 12, 13, 14 constituting the strands 1 and the intersections 2, followed by solidifying, thus obtaining a plastic net, and (5) a step of forming the fishing net using the plastic net.

Provided is a method for manufacturing a fishing net formed from a plastic net that can be handled by winding or folding although the net has plastic rigidity. The fishing net is manufactured by (1) a step of preparing a multifilament yarn formed by bundling a plurality of core-sheath type composite filaments, in each of which a core component is made of polyethylene terephthalate and a sheath component is made of polyolefin, (2) a step of preparing a yarn thread obtained by paralleling a plurality of the multifilament yarns, (3) a step of twisting or braiding four yarn threads 11, 12, 13, 14 to obtain a net constructed with strands 1 and intersections 2, (4) a step of heat-treating the net under without pressure to melt the sheath component of the yarn threads 11, 12, 13, 14 constituting the strands 1 and the intersections 2, followed by solidifying, thus obtaining a plastic net, and (5) a step of forming the fishing net using the plastic net.

A rigid or inflatable stand up paddleboard (SUP) conversion kit to provide a stable recreational platform for fishing. diving, hunting, nature photography, birdwatching or other activity. A detachable frame positions a pair of pontoons rearward relative to the SUP to avoid interference with rowing. A rolling storage case stores activity accessories such as diving or fishing equipment. After securing the storage case to the SUP, the case serves as a storage seat. A rear canopy frame may be assembled onto the SUP in order to support a rear canopy to conceal the user; and a front canopy frame may assembled onto the SUP in order to provide additional concealment that may be used for a hunting dog. The various conversion kits are compact and self-contained, and can fit easily in the trunk of a car.

A rigid or inflatable stand up paddleboard (SUP) conversion kit to provide a stable recreational platform for fishing. diving, hunting, nature photography, birdwatching or other activity. A detachable frame positions a pair of pontoons rearward relative to the SUP to avoid interference with rowing. A rolling storage case stores activity accessories such as diving or fishing equipment. After securing the storage case to the SUP, the case serves as a storage seat. A rear canopy frame may be assembled onto the SUP in order to support a rear canopy to conceal the user; and a front canopy frame may assembled onto the SUP in order to provide additional concealment that may be used for a hunting dog. The various conversion kits are compact and self-contained, and can fit easily in the trunk of a car.

The invention relates to a net, preferably a net for aquaculture, wherein the net comprises cords joined in a net mesh, wherein each cord comprises one or more yarns, the yarns having a tenacity of at least 0.6 N/tex and wherein the net has a mesh size of at least 8 mm, characterized in that the cords further comprise a polymeric resin, wherein the polymeric resin is a homopolymer or copolymer of ethylene and/or propylene, wherein the polymeric resin has a density as measured according to ISO1183 in the range from 860 to 970 kg/m3, a melting temperature in the range from 40 to 140 C. and a heat of fusion of at least 5 J/g. The invention further relates to a fishing net, a fish farming construction comprising said net, a fish farm, and a method for fish farming.

A production method for a headline sonar cable characterized by steps of: a. providing a first strength member (14); b. coupling to strength member (14) a conductor (122); c. forming a layer of polymeric material about the combination of strength member (14) and conductor (122) while ensuring that the conductor remains slack; d. forming a flow shield around the layer of polymeric material, thus forming an elongatable internally located conductive structure; and e. braiding a strength-member jacket layer (52) of polymeric material around the elongatable internally located conductive structure while ensuring that the conductor is slack when surrounded by the jacket layer (52).

For another embodiment, an optical fibre is wrapped around the exterior of the layer of polymeric material within which is enclosed a braided conductor formed about the first strength member (14). Other embodiments employ further thermo-plastic layers and further sheaths and further conductors.

[Object] To provide a tether that is automatically deformed from a deployment state in case of cutting or the like.

[Solving Means] A tether 10 is a net that kinks and is automatically deformed upon tension release. The tether 10 has a length of several kilometers to several tens of kilometers upon deployment and is capable of shrinking to have a length of approximately several tens of meters to several hundreds of meters by kinking and automatically being deformed when the tension is released because of cutting or the like.