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 lamp for use under water, comprising: an electrical lighting device, electrical connections for the power supply of the electrical lighting device, and a housing, wherein the housing is translucent at least in sections and defines a watertightly closable hollow space, wherein the electrical lighting device and the electrical connections are arranged within the hollow space, wherein the housing forms a mechanical shell surrounding the hollow space, the mechanical shell having a double curvature at each point of the shell; and a use of the lamp as a light bait when fishing.

A lamp for use under water having an electrical multicolor light source, electrical connections for the power supply of the electrical multicolor light source, a controller configured to control the light color emitted by the electrical multicolor light source, and a housing, wherein the housing is translucent at least in sections and defines a water tight closable hollow space, wherein the electrical multicolor light source and the electrical connections are arranged within the hollow space, wherein the housing forms a mechanical shell surrounding the hollow space, the mechanical shell having a double curvature at each point of the shell; and a use of the lamp as a light bait when fishing.

A crab pot including a top, a bottom, and at least one side wall disposed between the top and the bottom, the top, bottom, and the at least one side wall being supported by a frame and enclosing an interior space. The crab pot further includes at least one entrance tunnel in the at least one side wall to permit entry of an animal into the interior space, the at least one entrance tunnel including a first end adjacent the at least one side wall and a second end opposite the first end, the second end disposed within the interior space. The crab pot also includes a trigger including at least one rod pivotably mounted at the second end of the at least one entrance tunnel.

A crab pot including a top, a bottom, and at least one side wall disposed between the top and the bottom, the top, bottom, and the at least one side wall being supported by a frame and enclosing an interior space. The crab pot further includes at least one entrance tunnel in the at least one side wall to permit entry of an animal into the interior space, the at least one entrance tunnel including a first end adjacent the at least one side wall and a second end opposite the first end, the second end disposed within the interior space. The crab pot also includes a trigger including at least one rod pivotably mounted at the second end of the at least one entrance tunnel.

The fish catching trap includes a substantially rigid round base having an open net surrounding it. A buoy or float is attached to the net by a line, the buoy being held stationary to an upper handle-like portion of the base using a nail or pin. The pin is attached to a string connected to fish bait placed in the bottom of the trap. When a fish disturbs or moves the bait, the string is pulled and the pin is released, allowing the buoy to quickly move upwards, closing the net surrounding the base and trapping any fish in the area. A second buoy serves as a visual indicator that the trap has been sprung.

The fish catching trap includes a substantially rigid round base having an open net surrounding it. A buoy or float is attached to the net by a line, the buoy being held stationary to an upper handle-like portion of the base using a nail or pin. The pin is attached to a string connected to fish bait placed in the bottom of the trap. When a fish disturbs or moves the bait, the string is pulled and the pin is released, allowing the buoy to quickly move upwards, closing the net surrounding the base and trapping any fish in the area. A second buoy serves as a visual indicator that the trap has been sprung.

A fishing trap runner and fishing trap incorporating the runner, the runner comprising a rubber casing having a core. The core, which may be sectional, provides weight so that the runner can serve as ballast for the fishing trap. The rubber casing protects the core from damaging the trap or fishing equipment and, if the core is sealed by the casing, protects or limits the core from water damage.

A fishing trap runner and fishing trap incorporating the runner, the runner comprising a rubber casing having a core. The core, which may be sectional, provides weight so that the runner can serve as ballast for the fishing trap. The rubber casing protects the core from damaging the trap or fishing equipment and, if the core is sealed by the casing, protects or limits the core from water damage.

A shellfish trap system and a method for developing a reef are provided. The shellfish trap system includes a growing assembly, a first protective layer, and a second protective layer. The growing assembly includes a material which is conducive for shellfish in the pediveliger larvae stage to attach to. The first protective layer substantially envelops at least a first portion of the growing assembly during a first developmental stage of the shellfish and is removed from the growing assembly after completion of the first developmental stage. The second protective layer substantially envelops at least a second portion of the growing assembly during a second developmental stage of the shellfish, wherein the at least a second portion of the growing assembly is submerged in water during the second developmental stage of the shellfish.