Harpoon
A harpoon is a long spear-like instrument used in fishing to catch fish or large marine mammals such as whales. It does this task by impaling the target animal, allowing the fishermen to use a rope or chain attached to the butt of the projectile to catch the animal. A harpoon can also be used as a weapon.
Typically, a harpoon for fishing has backwards-pointing barbs which stop the fish getting free.
Harpoon Media
Unaaq ᐅᓈᖅ, a harpoon used by Inuit, 172 cm (68 in; 5.64 ft) long, MHNT
Epipaleolithic Azilian Le Mas-d'Azil, Ariège, France
"Manner in which Natives of the East Coast strike turtle." Near Cooktown, Australia. From Phillip Parker King's Survey. 1818.
Harpoons used in the whale fishery, 1887, including new design from Provincetown whalemen