Oval Abalone

Attribute Details
Scientific Name Haliotis ovina
Common Name Oval Abalone (frequently called the Sheep's Ear Abalone)
Distribution Wide tropical Indo-West Pacific distribution, ranging from the Maldives and Southeast Asia up to southern Japan, and stretching south to northern Australia (including the Great Barrier Reef) and Tonga.
Habitat Coral reef ecosystems, specifically inhabiting intertidal zones near the reef crest, shallow reef flats, and areas abundant with dead coral or limestone rubble.
Depth Range 0 to 30 metres (most commonly concentrated in shallow waters under 10 metres).
Average Size 4 to 6 centimetres.
Maximum Size 4 to 6 centimetres.
Commercial Status Non Commercial / Artisanal (heavily traded in the global shell craft market).
Key Characteristics This species is characterised by a wide, rounded-oval shell featuring a low, flattened profile and highly distinct, radiating ribs that resemble lines on a leaf or a sheep's ear. The exterior is commonly a mottled greenish-brown or reddish colouration marked with prominent patches of white or cream. It typically features 4 to 6 relatively large, open respiratory pores that are slightly elevated.

About Oval Abalone

The Oval Abalone (Haliotis ovina) is a widespread, tropical gastropod that breaks away from the cold-water preferences of Australia's larger commercial abalones. Thriving across the warm coral expanses of northern Australia and the broader Indo-Pacific, this nocturnal herbivore spends daylight hours wedged tightly inside coral crevices before emerging at night to graze on reef algae. While its small size limits its value as a mainstream food source, it is highly successful in the global commercial curio trade, where its beautifully pattern-rich, ear-shaped shells are harvested by local artisanal fisheries and sold worldwide for coastal decor and jewellery crafts.