Pleurobranchus brockii

For many weeks I had noticed some weird swimming critters during my safety stop coming up from the wreck of Inchcape 2 on the east coast of UAE. Eventually curiosity got the better of me and I started to photograph one of them and eventually collected a sample to photograph on the second dive.

I was very surprised to find out it was some sort of slug Pleurobranchus brockii and was about 2cm in size.