Sharktooth Spear is an Epic Fortnite Harvesting Tool. Sharktooth Spear was available via the Battle Pass during Season 15 and could be unlocked at Tier 49.
How-to Get the Sharktooth Spear Harvesting Tool
Sharktooth Spear is part of Season 15. If that season is still currently in the game, you can obtain this item by purchasing and/or leveling up your Battle Pass.