mine have done this, too. i always assumed it was some sort of mesenterial filament, but they're not attacking anything. anyway, it happens once in a while and then the filaments disappear. it's strange, but definitely not a sponge.
hmm, i've had the opposite experience. i love snails and they keep my tank very clean. i have a mix of small turbos, cerith, nerite, and my favorite top crown snails. i only have two hermit crabs.
ORA Borealis movie
Today, I made my first short movie in iMovie. I used continuous shooting mode and my new macro lens (thanks santa!). Take a look:
May's ORA Borealis
Also, I've been taking macro pictures of the coral, it's super fun but a bit challenging. I'll make sure to post 'em when I...
A few pictures from this morning! :D
The redish purple shots are the sunrise/sunset which is 2 bulbs and the more the blue shots are all 8 bulbs, if you're wondering about the difference in color.