They are designed to shoot a spear or shaft with great accuracy and force underwater, allowing the user to catch fish more effectively.
Spearguns come in different types, such as pneumatic (air-powered) and band-powered (using rubber bands).
They have a trigger mechanism and can be loaded with a shaft, which is propelled towards the target fish.

Proper training and safety precautions are essential when using spearguns due to the potential risks associated with underwater hunting.