Taxa of California Brown Sea Hare

Phylum Mollusca
  Class Gastropoda
     Subclass Opisthobranchia
         Order Anaspidea
            Genus Aplysia
               Species californica

California Brown Sea Hare
Source: http://www.biosciweb.net/animal/practicum/mollusca/acalifornica.htm

California Brown Sea Hare from Coat Oil Point/ Devereux-Santa Barbara-CA 

Sea Hares are seaweed eating animals. As a defense, they release the reddish purple ink which is produced by absorbing the red seaweed pigments, most likely phycoerythrin.

Sea Hare' s Reddish Purple Ink from Coat Oil Point/ Deverux-Santa Barbara-CA

Source: http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=78032