stevefromga2000
Aquarium Advice Freak
i have these shells that i have actually been watching grow, they started out of nowhere, and now they constantly move around, but only on this one live rock. they don't look harmful, but i was just curious what they are. there are a total of 3 of them that i have noticed so far. the other two pics are what i think would be featherdusters, maybe. they come out and open up like they are in the pics, but then they look like they close up and suck back down into the rock. then, later on they slowly come back out and open up. they don't get bothered by anything, but i think that they're neat. if they need some kind of special care, i would like to know so that they can continue to grow. i don't have a lot of equipment right now (tight budget), but these guys just started growing on their own.