Shell ear-shaped, oblong, with 3 whorls, the body whorl by far the largest. Apex slightly raised, suture distinct but not deeply impressed. Surface of shell glossy, with sculpture of very fine spiral grooves and faint growth lines. Animal larger than the shell, with a very large foot produced posteriorly and not retractable into the aperture; no operculum.
extremely variable, various tones of brown, green, pink, forming a variegated pattern more or less organized into spiral bands where a particular tone dominates. Inside of aperture nacreous.
common size :
5.3 mm (the Mediterranean specimen), 12 mm in the Red Sea (Bosch et al., 1995), up to 25 mm in the Indo-Pacific.
This shell could only be mistaken for very young Haliotis, but lacks the spiral series of holes, has a finer sculpture than any species of Haliotis found in the area, and has a more evenly rounded body whorl.
BIOLOGY / ECOLOGY
In the Indo-Pacific, Stomatella species live on shallow rocky bottoms; they have nocturnal habits and retreat under stones during daytime. This animal easily autotomizes the posterior part of the foot, which can be regenerated.
the Mediterranean specimen was found on a shell of Patella, but presumably inhabits the rocky substrate in general.