Above and below: typical specimens from Philippines.
Cebu, on reefs. 47-97mm.

Testa oblonga extra foramina angulata (see first picture), striis elevatis.
(Linnaeus, Systema Naturae, Vermes / Testacea / Haliotis / #652 p.780)

Young shell. Under rocks at low tide, Malibu beach, Okinawa. 48mm.
H. asinina often keeps its juvenile pattern throughout its life (apical area).

Above: Collected at 4-8m deep, under hard rocks, Cebu, 72.5mm.

Variations in juvenile specimens from intertidal, Cebu, 29-43mm, 1989.

Two adult shells from Philippines.
94-106mm. Original pictures © R. Kershaw.