Both the West Sea and East Sea variation both evolve into West Sea and East Sea Gastrodon at level 30.
Shellos evolves at level 30 into Gastrodon. It is the same on Diamond, Pearl and Platinum.
You can catch Gastrodons on the patch of grass towards Sunnyshore City. Or you can evolve a shellos.
Gastrodon
Shellos evolves into Gastrodon at level 30.
Shellos evolves in lvl 30 in a Gastrodon.
Gastrodon
A boy Shellos evolves at level 30 in the Pokemon franchise. At level 30, Shellos will appear as the Pokemon, Gastrodon.
you have to trade it from diamond/or pearl.
Level 30 (:
When you level it up to level 30, it will evolve into a Gastrodon.
Shellos is a pure water type that starting at level 30 can evolve into Gastrodon a duel water and ground type. The Shellos can have two different appearances depending on which side it was captured on.
You'll need to trade for it or evolve it from Shellos.