Did you mean the Pocket God Turtle?
The Sea Turtle (or Overweight Sea Turtle) is an animal that appeared in Part 1 of A Tale of Two Pygmies.
The Sea Turtle is a large, green turtle with a brown shell.
The Sea Turtle appeared only once in the sixth issue when the Pygmies were picking teams for Squid Ball. Klik had to pick his last team member and only Klak was left. Since Klak was clumsy and unwanted, Klik tried to choose the Sea Turtle as his final team member, but Dooby's rule was "Pygmies only".