Deep Python

Sea Snakes,   or Deep Pythons, are eel-like creatures that infest the Great Bay, lurking in the depths of Pinnacle Rock in Majora's Mask. When Link draws near, they shoot out of their burrows to grab him in their mouth and damage him before spitting him out. To defeat them, Zora Link must swim close to lure them out of their burrow, and stun and destroy them with the Zora Electrical Shield or boomerang fins. The sea snakes are guarding some of the missing Zora Eggs, which the thieving Gerudo Pirates lost to them when they were attacked, as well as a seahorse.

Trivia

 * In Animal Crossing, Gulliver tells a story where he states, "When I fought the sea snakes at Pinnacle Rock! Wait a minute... That wasn't me!"