Manzonia crassa
(Kanmacher in J. Adams, 1798)
Norway to Mediterranean, to Black Sea. Absent from continental coasts of North Sea (Hayward & Ryland, 1990). Grazer and detritus feeder in the upper infralittoral; it shelters in cracks, crevices or underside of stones.
Original taxon: Turbo crassus.
15m deep, Málaga, Andalucia, S. Spain. 2,5-3mm.
Synonyms: costatus, exigua, plicatus.
3m deep, at the foot of the citadel, Methóni, Messinia, Peloponnese, SW. Greece. 2,7mm.
A specimen from Punta Corrente, south of Rovinj, Croatia. 3,1mm. Original pictures provided by Llez for Wikimedia Commons – (CC BY-SA).
Well preserved specimen from 40m deep, off Le Scole, south of the harbour, Isola del Giglio, Toscana, W. Italy. 3mm.
1m deep, Osibova, Brač island, Split-Dalmatia Comitat, S. Croatia. Original pictures provided by R. Stanić (HR).
(CC BY-NC-SA)
26m deep, Punta de la Mona, east of La Herradura, Granada, Andalucia. 2,6mm.
3m deep, on Rat peninsula, near the emergences of Šipun cave, Uvala Tiha, Cavtat, S. Croatia. 2,75mm.

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