It's the Cyclops!

Here's Nemo from Finding Nemo spotted a one eyed monster named "Cyclops" from Spongebob Squarepants Movie, It looks like some of divers are kinda like Cthulu or Lovecraftian. Pretty shocking. Heh! Disney meets Nickelodeon.

Nemo belongs to Disney
Cyclops from Spongebob Squarepants belongs to Nickelodeon and Paramount