Lobiger souverbii

Circumtropical including Indo-West Pacific.

This green sapsucking slug has a shell which is visible but its four large paddle-like appendages are the more prominent feature. The main body of the this Lobiger is green and the appendages are cream with speckling. Some individuals have dark blue or black lines on the shell that these may be visible through the mantle tissue.

This slug is known for its camouflage - it mimics the green algae (Caulerpa) that it exclusively feeds on.

Has always been in the genus Lobiger but past misspellings of the species name include souverblei and souverbiei. Lobiger virdis is very similar and some taxonomists believe they are the same variable species.