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Clumpy Nudibranch
Asteronotus cespitosus
13.733, 120.887
Field Notes
Description:
"This is a large mound-shaped dorid with a distinctive sculpted appearance. The notum is smooth with large raised ridges and tubercles. There is usually a mid-dorsal longitudinal ridge flanked by compound tubercles that are often rough "mirror images" on either side. The tubercles become smaller marginally. The margin is thin and translucent, sometimes edged in pink. The color varies from light yellow to caramel to grayish tan with the tubercles and rhinophores a light cream or pale yellow. Its gills appear to change from light tan during the day to chocolate brown or blood red at night. "
"The name means "forming dense clumps," in reference to the large groups of tubercles on the notum. It is referred to as the "clumpy nudibranch" in Hoover, 1998 & 2006."
Source: http://seaslugsofhawaii.com/species/Asteronotus-cespitosus-a.html
Habitat:
Protected to highly exposed rocky areas, Indo-Pacific
Notes:
A very large nudibranch - about the size of large dinner plate. About 25 cm. Large rosette-like gills (pic 3 close-up). Night dive at a depth of about 6 m. Halo Anilao Dive Resort house reef, Batangas, Philippines
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