Deep Dive Keys

Deep Dive Keys are a currency item from the Season of the Deep (Season 21). They are used at the end of a Deep Dive to open the chest there, which is where the key is spent.

Redeeming a Deep Dive Key may improve the chance for a Deep Engram to drop. Once the Forgotten Treasures Sonar Station upgrade is unlocked, redeeming a Salvage or Deep Dive key also gives a chance at an additional Deep Engram. The wiki does not publish exact drop rates for this effect.