A buoyancy element is for constructing a modular buoyancy system for a circularly shaped net cage. The buoyancy element includes a cage side, an opposite straight long side, and coupling sides between the cage side and the straight long side. The cage side is curved, following the periphery of the net cage.

A fishing device includes a net disposed in a body of water containing fishes and a post installed near a perimeter of the net. The post further includes a stem, a cord, and a weight. A portion of the stem is above a surface of the body of water, and the cord is slidably secured to the stem. A first end of the cord is attached to the weight, and a second end of the cord is attached to the net. The weight is configured to move from a first position to a second position upon receiving wireless communication, and the first position is higher than the second position.

A fishing device includes a net disposed in a body of water containing fishes and a post installed near a perimeter of the net. The post further includes a stem, a cord, and a weight. A portion of the stem is above a surface of the body of water, and the cord is slidably secured to the stem. A first end of the cord is attached to the weight, and a second end of the cord is attached to the net. The weight is configured to move from a first position to a second position upon receiving wireless communication, and the first position is higher than the second position.

A net includes at least two ropes (2, 4), at least one mesh, wherein at least one corner of a mesh is formed by a knot (15) formed by two of the ropes (2, 4). The knot includes a first and a second opening (6, 8) in the first rope (2) through which the second rope (4) passes, and a first opening (10) in the second rope (4) through which the first rope (2) passes. A part of the first rope (2) is being positioned in the first opening (10) in the second rope (4) being in between the first and second opening (6, 8) of the first rope (2).

A net includes at least two ropes (2, 4), at least one mesh, wherein at least one corner of a mesh is formed by a knot (15) formed by two of the ropes (2, 4). The knot includes a first and a second opening (6, 8) in the first rope (2) through which the second rope (4) passes, and a first opening (10) in the second rope (4) through which the first rope (2) passes. A part of the first rope (2) is being positioned in the first opening (10) in the second rope (4) being in between the first and second opening (6, 8) of the first rope (2).

The present invention is a hoop net comprised of netting mounted to two or more semicircular tubular rods, forming a ring that maintains its shape and structural integrity. The two semicircular tubular rods are fashioned to connect seamlessly by a fastening means that allows the entire assembly to function as intended. The hoop net assembly includes four stabilizing cords positioned equidistant from each other along the ring, which cords converge at the center of the hoop net assembly and are connected to each other by a fastening means, then further connected to a single draw cord. The draw cord is used to cast the assembled hoop net into water to a desired depth and pulled back into the boat with live bait. Once the hoop net assembly has been used, the metal rods are easily disconnected to facilitate folding the hoop net in half for easy storage and portability.

In accordance with at least one aspect of this disclosure, a crustacean trap can include a cage configured to trap one or more crustaceans, and a propulsion system connected to the cage and configured to provide propulsion to the cage. In certain embodiments, the trap can include a controller configured to control the propulsion system to autonomously pilot the trap.

The present invention discloses an internal folding fish dip net including a net ring connecting piece, a handle, a folding main frame, a net pipe and a locking structure. The folding main frame includes a first folding main frame body and a second folding main frame body, and the locking structure is connected to the handle; the folding main frame further includes a directional shaft sleeve, the directional shaft sleeve is fixed in the first folding main frame body, the second folding main frame body is connected to the directional shaft sleeve in a sleeving mode and rotatably mounted on the directional shaft sleeve, and the handle is mounted in the directional shaft sleeve; a main frame hole is formed in the second folding main frame body, a directional hole is formed in the directional shaft sleeve.

The present invention discloses an internal folding fish dip net including a net ring connecting piece, a handle, a folding main frame, a net pipe and a locking structure. The folding main frame includes a first folding main frame body and a second folding main frame body, and the locking structure is connected to the handle; the folding main frame further includes a directional shaft sleeve, the directional shaft sleeve is fixed in the first folding main frame body, the second folding main frame body is connected to the directional shaft sleeve in a sleeving mode and rotatably mounted on the directional shaft sleeve, and the handle is mounted in the directional shaft sleeve; a main frame hole is formed in the second folding main frame body, a directional hole is formed in the directional shaft sleeve.

Provided are methods and apparatuses for harvesting clams, particularly soft shelled clams. The scoop is particularly configured for digging at sufficient depths into the substrate beneath the clams positions and for shooting jets of water and combinations of water and air to fluidize the surrounding substrate and float the clams to the surface for collection and transfer to a work platform. The structure and active elements of the scoop, as part of an overall harvesting platform or vehicle, which can be precisely controlled, allow for the harvesting or transplanting of soft shell clams without excessively damaging the desired shellfish.