A speargun is a specialized tool used for underwater hunting, primarily for catching fish. It consists of a long barrel, a trigger mechanism, and a spear or shaft that is propelled by elastic bands or compressed air. Spearguns come in various sizes and designs, catering to different types of underwater environments and target species. Users typically aim the speargun at their target while underwater and pull the trigger to release the spear. This method of fishing is often associated with free diving or scuba diving, allowing for a more direct and engaging way to catch fish compared to traditional fishing methods.