These are just some of the species that resemble the widespread and well-known Phyllidia varicosa. While some of these are pretty easy to identify, others can be quite difficult to tell apart. I believe that a number of the identifications made on various web pages and in some books are erroneous. I've put a fair bit of skull sweat into trying to determine which species is which, and have changed my mind several times in the process. I've now seen enough specimens in the Marshalls, as well as in Hawaii, the Caroline Islands, and the Solomons, to be relatively confident of the IDs. But that's not to say that I won't change my mind yet again as more specimens become available for examination.
Each of the photos below links to the page for that species.
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