Some embodiments may be of spearfishing apparatus fitted with at least one magnet configured to repel sharks away from the spearfishing apparatus. The spearfishing apparatus may be one or more of: a spearfishing shaft, a spearfishing tip, and/or a spearfishing gun. Some embodiments may be of personal floatation devices (PFDs) fitted with at least one magnet configured to repel sharks away from the PFDs. Some PFDs may be fitted with a tethered drop-down magnetic apparatus to protect lower extremities of a wearer of such PFDs. Such magnets may be electromagnets powered by batteries in some embodiments.

Some embodiments may be of spearfishing apparatus fitted with at least one magnet configured to repel sharks away from the spearfishing apparatus. The spearfishing apparatus may be one or more of: a spearfishing shaft, a spearfishing tip, and/or a spearfishing gun. Some embodiments may be of personal floatation devices (PFDs) fitted with at least one magnet configured to repel sharks away from the PFDs. Some PFDs may be fitted with a tethered drop-down magnetic apparatus to protect lower extremities of a wearer of such PFDs. Such magnets may be electromagnets powered by batteries in some embodiments.

A bow has an arrow quiver further attached to a bowfishing bow or reel. The arrow quiver provides a clip that advantageously holds at least one arrow shaft along the bowfishing riser without interference with the line during use and may further hold one or more replacement tips and tools commonly used during the course of bowfishing. The replacement tips are stored to be easily accessible with the sharp points of the tips directed away from the user to avoid injury. Further, small hand tools, such as Allen wrenches or hex keys, are stored on the quiver in a manner which improves flexibility of the arrow clip.

A bow has an arrow quiver further attached to a bowfishing bow or reel. The arrow quiver provides a clip that advantageously holds at least one arrow shaft along the bowfishing riser without interference with the line during use and may further hold one or more replacement tips and tools commonly used during the course of bowfishing. The replacement tips are stored to be easily accessible with the sharp points of the tips directed away from the user to avoid injury. Further, small hand tools, such as Allen wrenches or hex keys, are stored on the quiver in a manner which improves flexibility of the arrow clip.

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 barbed fishing arrowhead has a ferrule having an aft end and an opposite fore end, a head adjoining to the fore end, a tip upon the head, and two barbs cooperatively engaging the head. The barbs fit within a chamber in the ferrule and rotate upon a pin also in a slot. The chamber includes an interior bumper towards the aft end that partially extends the barbs when retracted in the flight position. The barbs rotate outwardly following passage of the ferrule through a fish and engage the side of a fish until released by a fisherman. In an alternate embodiment, the invention has a smaller form with barbs having a sharper point and a tooth upon their leading edge.

A barbed fishing arrowhead has a ferrule having an aft end and an opposite fore end, a head adjoining to the fore end, a tip upon the head, and two barbs cooperatively engaging the head. The barbs fit within a chamber in the ferrule and rotate upon a pin also in a slot. The chamber includes an interior bumper towards the aft end that partially extends the barbs when retracted in the flight position. The barbs rotate outwardly following passage of the ferrule through a fish and engage the side of a fish until released by a fisherman. In an alternate embodiment, the invention has a smaller form with barbs having a sharper point and a tooth upon their leading edge.

An arrow includes an arrowhead and a shaft. An assembly interconnects the shaft and the arrowhead such that, in one position, the assembly substantially rigidly interconnects the arrowhead and the shaft to prevent or restrict angular or radial movement of the arrowhead relative to the shaft, and to prevent axial movement of the arrowhead relative to the shaft in one axial direction. A spring resists movement of the arrowhead relative to the shaft in the other axial direction. When the spring force is overcome, the assembly permits the arrowhead to pivot relative to the shaft while maintaining the connection between the arrowhead and the shaft.

An arrow includes an arrowhead and a shaft. An assembly interconnects the shaft and the arrowhead such that, in one position, the assembly substantially rigidly interconnects the arrowhead and the shaft to prevent or restrict angular or radial movement of the arrowhead relative to the shaft, and to prevent axial movement of the arrowhead relative to the shaft in one axial direction. A spring resists movement of the arrowhead relative to the shaft in the other axial direction. When the spring force is overcome, the assembly permits the arrowhead to pivot relative to the shaft while maintaining the connection between the arrowhead and the shaft.

A sportfishing speargun is sized for ease of use and provides the power of the largest rubber band speargun. The speargun includes a drive system with a first side drive component and a second side drive component, the drive system is driven by one or more power bands to provide mechanical advantage and the force of a large speargun in a compact device.