Calliostoma trotini is a species of sea snail, a marine gastropod mollusc in the family Calliostomatidae.WoRMS (2010). Calliostoma trotini Poppe, Tagaro & Dekker, 2006. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=389930 on 2010-05-21
Range of distribution This species is endemic to the Philippines. It is found in Balabac Island, Palawan.Poppe G. T., Tagaro S. P. & Dekker H. (2006). The Seguenziidae, Chilodontidae, Trochidae, Calliostomatidae & Solariellidae of the Philippine Islands. Conchbooks, Germany, Hackenheim, . It is also found in the East China Sea.
Habitat This top shell lives at depths of about 150 m.
Shell description The shell is elevated and glossy, conical with straight whorls. The protoconch is white.
Overall color is light olive with a purplish iridescent shine. There are darker blotches just above the suture, on the periphery.
The shell height varies between 8 mm and 12 mm, and the width is up to 11 mm. It is average-sized for the genus.
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