Trochus maculatus Linnaeus, 1758
26.8mm

These are abundant on many shallow lagoon, pinnacle and seaward reefs, usually under rocks but sometimes exposed on the hard substrate.

This one must have had a cap shell attached to its shell, which wore away some of the shell of the Trochus, exposing the nacreous mother-of-pearl layer that underlies the outer layer of shell material. The cap shell must have fallen off quite recently.

Created 4 January 2018

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