I have these white things on my back wall. They are not trochus snails. Bad pics but I get get better. They look like snails of some sort. As far as I can tell, they are only on the back wall where they is some algae
they seem to be oval in shape, though there might be 1 or 2 trochus in there. Looks like I can see tiny feelers on one end. The last pic all the way down you can see the shadowy feelers.
they seem to be oval in shape, though there might be 1 or 2 trochus in there. Looks like I can see tiny feelers on one end. The last pic all the way down you can see the shadowy feelers.