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heart urchin

Brissopsis lyrifera

Classification

Family
Brissidae

The heart urchins are members of the order Spatangoida of sea urchins. Their body are somewhat elongated ovals in form, and are distinguished by the mouth being placed towards one end of the animal, and the anus towards the other. As a result, unlike most other sea urchins, heart urchins are bilaterally symmetrical, and have a distinct anterior surface.

Distribution

(c) Bernard Picton, some rights reserved (CC BY), uploaded by Bernard Picton · CC-BY
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Countries in the Picchu catalog
Netherlands · 48Spain · 13France · 3United Kingdom · 2