Crystal Trident

The Crystal Trident is an item found within the Sunken Ship in the bottom of the ocean kingdom, Atlantica. It appears to be a small blue replica of King Triton's own Trident without a handle. It is supposed to have the power to reveal Atlantica's Keyhole. Once Sora obtains it, he brings it to Ariel's Grotto, but it is destroyed by King Triton before it has the chance to fulfill its task.

It was restored after the defeat of Ursula, when Triton used the power of his trident to reveal the world's Keyhole.