The harpoon is like a spear but the harpoon quarry (the head) gets stuck in the animal. The quarry has a string tied to the shaft of the harpoon so the hunter can pull the quarry back. It is used for hunting sea mammals like whales seals, and sometimes for fish. Usually, the harppon shaft was make of wood because it can float. If wood was not available, then they would use bone or antler, whale tusks wrapped together.
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The quarry (head) is made from bone, ivory, or slate (rock).