"This individual is characteristic of Indian Ocean populations of this species which have 3 parallel longitudinal rows of pustules on the centre of the mantle. In contrast, Pacific Ocean populations of this species have only 1 definite row mid-centrally."
Comment from Richard Willan
This individual is characteristic of Indian Ocean populations of this species which have 3 parallel longitudinal rows of pustules on the centre of the mantle. In contrast, Pacific Ocean populations of this species have only 1 definite row mid-centrally.