Chitons · Marine Life

Giant chiton (Dinoplax gigas)

Adult chiton, with badly eroded valves, found in a rock crevice. Port Alfred, Eastern Cape (2021) – iNaturalist

Also called ‘armadillo’.

Shell large with steeply arched grey or brown valves, usually badly eroded. Girdle brown and dotted with distinct tufts of small brown hairs.

70 to 100 mm in length.

Usually found partially or totally buried in sand on flat rocky reefs. Sometimes used as bait by fishermen and eaten by some people, although tough and leathery. Replaced in the northern Transkei and Natal by another giant chiton, Dinoplax validifossus, in which the girdle hairs are uniformly distributed, not concentrated into tufts.

Two Oceans: A Guide to the Marine Life of Southern Africa (2007).
Details of the girdle, with the tufts of hair, on an adult chiton. Old Woman’s River, Eastern Cape (2021) – iNaturalist
Epibiotic encrusting coralline algae and red algae on the valves of an adult chiton. Port Alfred, Eastern Cape (2021) – iNaturalist
Underside of an adult chiton. Port Alfred, Eastern Cape (2021) – iNaturalist

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