A Jet Black Sea Slug Hitchhiker is patrolling my reef tank

[Yolo Thorn]

Video of my Jet Black Sea Slug Hitchhiker

Per the seaslug forum, I believe I have ID him as a Scutus or AKA Elephant Slug (but he is not a slug but instead a snail). http://www.seaslugforum.net/find/scutus

Does anyone know anything about these guys? He has been a good tankmate so far on good behavior with the other fish, corals, & shrimp, and the seaslug forum says he just eats algae.

 

[Jared Bryant]

Check on these forums but I vaguely remember a couple of posters stating they would consume acros. Cool find anyways.