Abstract: An underwater spear assembly, including a shaft and a detachable sharpened tip, and an extension tip which is slidably attachable to the sharpened tip, a flexible cable attached between the extension tip and a releasable clamp slidably mounted on the shaft and which cable can be readily detached from the clamp to remove the spear tip assembly from a fish by pulling the free end of the cable through a hole in a fish made by the spear assembly. The clamp includes a 45.degree. angled inclined portion which provides a bending of the cable and the required tension on the cable to inhibit the tip from falling off the spear during firing thereof from a spear gun. The clamp includes a compression spring between the inclined portion and the sleeve so that the cable stop may be released upon movement of the inclined portion away from a passageway through a lateral flange of the sleeve.

Abstract: A tip assembly for an underwater spear, the assembly including a shaft and a sharpened tip which is slidably disassemblable from the shaft, a flexible cable attached between the tip and shaft which can be readily detached from the shaft to remove the spear tip assembly from a fish by pulling the free end of the cable through a hole in a fish made by the assembly.

Abstract: An expendable explosive accessory device to be placed on the forward tip of a spear for underwater fishing which includes a molded plastic outer tubular receiver having a forward closed end, a rearward open end, and an interior cavity to receive an explosive cartridge activated by a percussion cap in its base. An inner tubular receiver has a closed end positioned slidingly into the open end of the outer receiver behind the cartridge to waterproof seal the cartridge, and having an inner cavity adapted to receive the tip of a spear. A frictional ring means is provided to maintain all components in snug fitting relationship with each other and with the spear tip and a safety pin means is provided to prevent premature firing of the cartridge.