"I think this is more likely Aplysia californica (Aplysiidae). Normally it’s easy to tell Aplysia californica apart from Aplysia juliana because the parapodia of Aplysia californica fuse much lower down on the back, but that is not clear from this photo, so my guess is based on coloration."
Comment from Richard Willan
I think this is more likely Aplysia californica (Aplysiidae). Normally it’s easy to tell Aplysia californica apart from Aplysia juliana because the parapodia of Aplysia californica fuse much lower down on the back, but that is not clear from this photo, so my guess is based on coloration.