Phyllidiella granulata is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Phyllidiidae.[1]
This species was described from Guam with an additional specimen from Lizard Island, Australia. It has been reported from the Philippines, Papua New Guinea and Sipadan Island.[2]
This nudibranch has a grey dorsum with white-capped tubercles with pink or grey bases. There are two longitudinal black lines which run in a zigzag pattern between the tubercle groups, joining at the tail. Connecting black lines may run across the body. The rhinophores are black with a pale grey base.
This species has been reported to feed on the sponge Acanthella cavernosa.