Omanyte has a large, pale-yellow shell on its back. Its main body is sky-blue with 10 tentacles (two of them are longer than the other eight). Omanyte has saucer-like eyes. Omanyte uses the many gas filled chambers in its helix shell to remain buoyant in the water column. It regulates its height by evacuating gases from compartments. Its shell turns into the fossil which is used to resurrect it.