Phyllodesmium magnum is one of the larger species of Phyllodesmium.
It rapidly drops off many of its cerata when disturbed
(autotomise).
Like other members of the genus Phyllodesmium it is what Bill Rudman calls
"Solar-powered Sea Slugs". More informations on Phyllodesmium magnum are at
Bill Rudman's Sea-Slug Forum!
