Dark Phlogus

From Wikitroid, the Metroid wiki

The Dark Phlogus is a creature located in Dark Torvus Bog on Dark Aether. It is found in the corrupt water in the area and opens and closes. When open, it can be shot, and when that is done, it will flip over and create a light energy shield. When flipped over it can be used as a platform, but it will return to the upright position in time.

It is very similar to the Puddle Spore and Spore Spawn.