Ingworm

From Wikitroid, the Metroid wiki

In Metroid Prime 2: Echoes, Ingworms are Darklings native to Dark Aether. They have no offensive capabilities, so the Ing use them to store items or block passages in Dark Aether. An area blocked by giant Ingworms cannot be reached with any weapons or technology, and is therefore shut off for the entirety of the game. They are also used as storage containers and can be destroyed by a charged beam.