What spear did karana mske to hunt the devilfish?

First she worked down some sea elephant teeth into the head of the spear using a barbed point. She then made a ring and faastened it to the end of the shaft, and into this ring fitted the head, witch was tied to a long string made of braided sinew. When the spear was thrown and struck the devilfish, the head came loose from the shaft. The shaft floated on the water, but the pointed barb was held by the string witch was tied was tied to her wrist. This spear was especially good because it could be thrown from a distance.