The crystal on its forehead gives it extrasensory powers, to some extent. Unfortunately, they're all useless in battle; all it can do is see into the minds of fish. And not fish beasts, either; just ordinary fish. It'd be a nice party trick if beasts went to parties.In-game description
The Sphenodon is the Stage 2 power form of the Tsunami group.
Sphenodons cannot be found in the wild. They are not used by any enemy signers, except for those participating in the Random Tournament.
A Sphenodon can be evolved from a Dogrop. It cannot evolve again.