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Updated 2/27/2024

Family Fionidae

CIRCUMGLOBAL / HAWAII

Fiona pinnata

Waimanalo Bay, Oahu

BARNACLE NUDIBRANCH

Found with and feeds upon Gooseneck Barnacles attached to buoyant items or Velella in the open sea.  Assumes color of its prey and has a life cycle of only one month.  Attains 1 inch.  Worldwide distribution.