Possibly seasonally common in the Solitary Island Marine Park. Members of this genus appear to have world wide distribution in tropical waters.
Subject discovered under a rock in intertidal rock pool, thought to feed on anemones.
Specimen pictured approximately 20 mm long, known to grow to at least 50 mm.
Gary Cobb, David Mullins, Nudibranchs Encyclopedia, 2nd Edition, 2015. Publishers Thomas Slone, Masalai Press and Tim Hochgrebe, Underwater Australasia. p.97.