I think that everyone needs to sit with a flashlight at night and see what's goin' on in the tank. That's why I keep finding these things. I don't even have to cover the flashlight with the red lens...I just shine it in there and see all kinds of crazy *%*& !
I found some info on the "fleshy limpets" as this one is considered...thanks to dadummy giving me some info to go on...guess I was right about the "frilly" part...
This was in a Reefkeeping.com article:
"Fleshy limpets, Lucapina species, are commonly found on Caribbean rock, and there are several species of them. The largest are about the size of shield limpets, but many are smaller. They also have a mantle that extends up over the shell, but in this case, the mantle is brightly colored and ranges from yellow to red. These are keyhole limpets, and as such are probably omnivorous, but from the reports I have received, they don't seem to be eating the decorative livestock. Generally, they seem to be grazing on algae. Like the shield limpets, they are largely nocturnal and are generally out of sight and inactive during the day. When the mantle is retracted, they will be seen to have a small shell on their back and its center will be perforated with a hole. As with the shield limpets, they don't appear to reproduce in aquaria and generally only survive a few months. "
The funny thing is that they say they will only survive a few months, when this one has got to have been in my tank for over 6 months. I'm reading differing opinions on the web about whether it's okay to keep in the tank or not, but I'll just wait and see...I'm not seeing anything major disappearing at the moment and they seem to stick to the lower section of my rocks where I have less corals to be concerned with anyway.