Hi Paul,
If I got the rigth pcture it should be a juvenile of Magilus sp. Thus, the
"rock" should actually be a coral piece.
Cheers
=========================================================
Marco Oliverio - Evolutionary Biology PhD
Research Scientist
Dipartimento di Biologia Animale e dell'Uomo
Viale dell'Universita' 32
I-00185 Roma ITALY
phone +39.06.49914750
FAX +39.06.4958259
e-mail: [log in to unmask]