Chitons · Marine Life

Spiny chiton (Acanthochitona garnoti)

Unfouled chiton on a rock, spines out. Fishhoek, Western Cape (2020) – iNaturalist

Shell valves dull brown with oblique pale stripes, largely buried by the wide girdle. Girdle dotted with small spicules and with a series of nine pairs of characteristic tufts of long glassy spines.

30 – 45 mm.

Unusual in that it is abundant on exposed rock surfaces high in the intertidal.
Should be handled with care, since the spines cause irritation if they become embedded in the skin.

Two Oceans: A Guide to the Marine Life of Southern Africa (2007).

Discover in Video

Chiton cruising under a rock boulder covered by encrusting coralline algae.
Fishhoek, Western Cape (2020) – iNaturalist
Details of the tufts of spines on a chiton, fouled by sea lettuce (Ulva sp.).
Mouille Point, Cape Town, Western Cape (2020) – iNaturalist
Details of the oblique pale stripes on a chiton hiding in a rock crack.
Mouille Point, Cape Town, Western Cape (2020) – iNaturalist
Spiny chiton cruising around mussels at the bottom of a rock pool. Mosselbaai, Western Cape (2022).

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