I couldn't tell, Mark. I tried prying their itty-bitty mouths open, but their lips were sealed... ---------- > From: ferreter <[log in to unmask]> > Curious though , what are the cypraea eating ?? I thought they are algae > eaters (herbivorous)?? Actually, I have a couple of clumps of sea grass that came from the area where the cowries were collected (some of the cauricas were burrowed down in this stuff) and some algae-covered rocks from the same area in the aquarium. I don't know if they are eating anything in the aquarium, but they seem to enjoy crawling around on it. Cheers, Don