Madrella sanguinea (Angas, 1864)
Possibly seasonally common in the Solitary Islands Marine Park. Known from Indo-West Pacific with recordings in Bali and Japan. In Australia recorded from east coast as far south as Victoria and Tasmania.
Known to feed on the bryozoan Mucropetraliella ellerii. Depth range from intertidal to at least 5m.
Rusty red colouration with white or cream on, and bridging between, the rhinophores. Grows to 33 mm, specimen pictured about 10 mm.
Gary Cobb, David Mullins, Nudibranchs Encyclopedia, 2nd Edition, 2015. Publishers Thomas Slone, Masalai Press and Tim Hochgrebe, Underwater Australasia. p.252.
Robert Burn, 2015. Museum Victoria Field Guides: Nudibranchs and related molluscs. Museum Victoria, Melbourne. p.198.
Australian Museum, Sea Slug Forum. http://www.seaslugforum.net/find/madrsang. Accessed 12/08/18.