Is this a flatworm in my fuge?
What's this brownish thing? It's on this frag plug and seems to be getting bigger. Saw one on a rock also.
Are these baby snails?
Is this red macroalgae or coral?
Seasquirts?
A blue sponge?
Is this fuzzy stuff on the side of this frag the polyps spreading?
This emerald green crab has algae and sponges growing on his legs. Is that a problem? Why doesn't he pick it off?
Has anyone had any luck getting these white polyps to transfer to another sponge or rock? The red sponge under it isn't doing well.