Haliotis tuberculata has a flattened, oval, 'ear-shaped' shell, up to 9 cm long and 6.5 cm broad, that is slightly coiled. The outer surface is greenish-brown to red and often mottled. The inner surface is lined with iridescent mother of pearl. A row of round, slightly raised holes runs along the bottom margin of the shell. The outer, larger, 5-7 of these are open while the remainder are closed. The foot is large and muscular.
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