Poseidon’s Trident Location (Breathe Underwater Perk)
Poseidon’s Trident is a legendary spear found in AC Odyssey. It can be found at the Temple of Poseidon, a very small island on the right hand side of the map. The legendary chest here contains Poseidon’s Trident.
It has a unique perk which allows you to breathe underwater forever. This is particularly helpful for the underwater locations required for the Child of Poseidon Achievement.
Good luck!
The island is not on my map what do u do