A wire structure may have a loop of fishing line on each of four sides, with weights to lower the line, giving a loop on each side. These loops may be tied to a central fishing line, which a user may pull to close the loops. This may catch a crab if one is in the trap, allowing a user to bring the crab to a wharf or boat, for example. Releasing the fishing line may allow the weights to lower, which may open the loops and release the crab without the user needing to touch the trap near the crab, which may reduce the chance of being pinched by a crab claw.

A wire structure may have a loop of fishing line on each of four sides, with weights to lower the line, giving a loop on each side. These loops may be tied to a central fishing line, which a user may pull to close the loops. This may catch a crab if one is in the trap, allowing a user to bring the crab to a wharf or boat, for example. Releasing the fishing line may allow the weights to lower, which may open the loops and release the crab without the user needing to touch the trap near the crab, which may reduce the chance of being pinched by a crab claw.

A wire structure may have a loop of fishing line on each of four sides, with weights to lower the line, giving a loop on each side. These loops may be tied to a central fishing line, which a user may pull to close the loops. This may catch a crab if one is in the trap, allowing a user to bring the crab to a wharf or boat, for example. Releasing the fishing line may allow the weights to lower, which may open the loops and release the crab without the user needing to touch the trap near the crab, which may reduce the chance of being pinched by a crab claw.

The location of lost or entangled fishing gear, known as derelict gear, is detected. The motion or change of position of a buoy attached to fishing gear is determined via sensors mounted on the buoy and compared to typical buoy motion. If the buoy has moved beyond a threshold value from its original location, an alert is sent to the fisherman. The available sensor data will be used to determine the likelihood of loss or entanglement. This alert facilitates recovery of lost or entangled gear by identifying where immediate retrieval efforts should be focused. The number of traps lost to the ocean that otherwise would continue to trap or entangle marine life may be reduced.

Traps are monitored for catch, by-catch, and environmental conditions. A catch sensor is configured to detect a catch of animals or marine life caught in a trap. An environmental sensor is configured to sense an environmental condition associated with a location of the trap. A trap monitor is configured to collect and transmit catch data indicative of the detected catch and environmental data indicated of the environmental condition to a communications subsystem for distribution to a remote device or a device in close proximity to the communications subsystem.

Traps are monitored for catch, by-catch, and environmental conditions. A catch sensor is configured to detect a catch of animals or marine life caught in a trap. An environmental sensor is configured to sense an environmental condition associated with a location of the trap. A trap monitor is configured to collect and transmit catch data indicative of the detected catch and environmental data indicated of the environmental condition to a communications subsystem for distribution to a remote device or a device in close proximity to the communications subsystem.

Aquatic structures with adjustable buoyancy constructed in part with a vent valve for a buoyancy control device suitable for divers, where the vent valve may be opened by any combination of over-pressure, manual pressure relief or a powered means, where a force to a valve plug is applied by means of a spring that is constrained to prevent entirely lateral and angular movement but in which movement of the plug in the axis of the seat is unconstrained.

A raccoon trapping module which can be attached to an existing wildlife trapping cage to enable only raccoons to be trapped in the trapping cage, comprising at least a door which opens and closes an entrance of a horizontally long cage, a lock mechanism which locks the door in an open state, and a linkage member which is linked with a trigger member which performs a lock release operation of the lock mechanism, wherein a hollow housing is provided which is attached to an end part of the cage at the opposite side from the door, a surface of the housing at the door side has an arm insertion hole which enables a raccoon to insert a forearm, a baiting part in which bait is placed is provided inside of the housing within a range which a hand of the raccoon can reach when the raccoon inserts its forearm from the opening part, and a connecting member makes a linkage member perform a lock release operation of a lock mechanism by the action of a raccoon which takes bait from the baiting member.

A minnow trap and bait assembly for luring minnows using bait held in a container within the minnow trap includes a frame including a boundary wall having an exterior surface and an interior surface. A pair of funnels is coupled to the frame and each of the funnels extend into the frame wherein each of the funnels provides access for minnows into the frame. A bait container is positioned within the frame and encloses a compartment space containing minnow bait. An outer surface of the bait container has a container opening extending therethrough and into the compartment space, and a lid removably closes the container opening of the compartment space of the bait container. A securing member couples the bait container to the frame within the interior space.

A trap accessory for attachment to a marine trap that facilitates release of by-catch. A buoyant recovery buoy is operably attached to a trap frame secured to the marine trap. Components for operably attaching the recovery buoy to the trap frame include a latch and attachment components, of which at least one of these components is a Degradable Metal (DM). The DM maintains the integrity of the trap and trap accessory for a pre-determined time, typically 1 year or less. When one or more of the DM components are sufficiently degraded, the recovery buoy is released to open a slot through which animals can escape. A buoy line connected to the trap frame maintains connection between the marine trap and the recovery buoy, which assists in recovery of the marine trap.