Cistina columbiae Gray, 1840

We are not certain all these are the same species, but all have the spiny arms characteristic of Cistina columbiae. They are not especially uncommon under rocks on both lagoon and seaward reefs.

Underside of the previous specimen.

Underside of one arm of the previous specimen.

The one below is from Stan Jazwinski.

Updated 3 July 2021

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