Genus Thersistrombus Bandel, 2007
Thersistrombus thersites (Swainson, 1823)
From depth of 25 feet, Kopo Reef, Kotu Island, Kingdom Of Tonga (147 mm.)
Vietnam (129 mm.). Digital image copyright 2017 by Simon Aiken.
By SCUBA diver, Okinawa, Japan. Image Copyright Donald Marshall.