In some embodiments, an arrow comprises a shaft and a notch in an end of the arrow. The notch is arranged to receive a bowstring. A first finger recess and a second finger recess are located in proximity to the notch. The first finger recess and the second finger recess comprise opposed diverging surfaces. In some embodiments, an arrow comprises a magnetic slider.

In some embodiments, an arrow comprises a shaft and a notch in an end of the arrow. The notch is arranged to receive a bowstring. A first finger recess and a second finger recess are located in proximity to the notch. The first finger recess and the second finger recess comprise opposed diverging surfaces. In some embodiments, an arrow comprises a magnetic slider.

A submersible (10) and method of using a submersible for capturing a target species comprising: at least one controllable thruster (14) for manoeuvring the submersible; at least one camera (12) for capturing images to allow the identification of an individual of a target species; a catapult mechanism (33) wherein the catapult mechanism is reversibly moveable between a released configuration and a primed configuration by an activatable motor, and wherein the catapult mechanism may be loaded with a retractable device mounted on the catapult mechanism, and the retractable device may be launched from the submersible by being propelled by the catapult mechanism; a container for receiving a captured individual.

A submersible (10) and method of using a submersible for capturing a target species comprising: at least one controllable thruster (14) for manoeuvring the submersible; at least one camera (12) for capturing images to allow the identification of an individual of a target species; a catapult mechanism (33) wherein the catapult mechanism is reversibly moveable between a released configuration and a primed configuration by an activatable motor, and wherein the catapult mechanism may be loaded with a retractable device mounted on the catapult mechanism, and the retractable device may be launched from the submersible by being propelled by the catapult mechanism; a container for receiving a captured individual.

Shown and described is a handle for a fish spear, the fish spear comprising a one-piece or multi-piece spear rod and an elastic band as a tensioning element, the spear rod having a spear tip at one end and the elastic band being attachable to the other end of the spear rod to tension the elastic band along the spear rod with a user's hand, wherein the handle is adapted to releasably secure the tensioned elastic band and includes a trigger mechanism for manually releasing the elastic band from the handle.

Shown and described is a handle for a fish spear, the fish spear comprising a one-piece or multi-piece spear rod and an elastic band as a tensioning element, the spear rod having a spear tip at one end and the elastic band being attachable to the other end of the spear rod to tension the elastic band along the spear rod with a user's hand, wherein the handle is adapted to releasably secure the tensioned elastic band and includes a trigger mechanism for manually releasing the elastic band from the handle.

A diving accessory is disclosed. The invention is comprised of a compact, lightweight fishing spear having two parts: a hollow main tube and a barbed spear. Said spear can be stowed inside the tube and the entire apparatus clipped to a diver when not in use. The invention can also be used as a poking stick (for self defense against large sea creatures), a tickling stick (for prodding prey out of small spaces), and as a camera monopole (by using the onboard shoe mount). An objective of the invention is to provide a compact, spearfishing device with multiple functions to enhance the diving experience.

A diving accessory is disclosed. The invention is comprised of a compact, lightweight fishing spear having two parts: a hollow main tube and a barbed spear. Said spear can be stowed inside the tube and the entire apparatus clipped to a diver when not in use. The invention can also be used as a poking stick (for self defense against large sea creatures), a tickling stick (for prodding prey out of small spaces), and as a camera monopole (by using the onboard shoe mount). An objective of the invention is to provide a compact, spearfishing device with multiple functions to enhance the diving experience.

An enhanced slide and a circumferential stop assembly for use with a bowfishing arrow may include matching shapes for engaging one another in use. The engagement of such matching shapes offers many improvements over conventional slide and stop assemblies, including an even circumferential distribution of impact between the slide and the stop as well as inhibiting relative longitudinal or rotational movement between the slide and stop assemblies. The stop assembly may further include a nock adapter for engaging a nock, thereby serving as a dual purpose adapter. For ease of use and installation, the stop assembly may be an outsert, meaning that it is adapted to fit snugly over an arrow shaft.

A hook, fishhook, or fishing spear with at least one barb fixed to the hook, fishhook, or fishing spear with an epoxy that disbonds upon the application of an electric current. Components of the barb and the hook, fishhook, or fishing spear form a loop of electrically conductive material that carries a current induced by the application of a magnetic field generated by a magnetic field generator external to the hook, fishhook, or fishing spear. A current may be generated to disband the barb from the hook, fishhook, or fishing spear in order to facilitate the removal of the hook, fishhook, or fishing spear from an impaled fish.