Ever seen one of these?

[lazylivin]

Hyperlinks don't really show all that different from regular text so it is hard to tell there was anything there.

[rayviv]

thoes things are awsome i have a key hole limpet in my frag tank.  i found him in my main tank first but put him in my frag tank so i could see it more often.

What is a 'Key Hole Limpet'? Can you post a picture ?