Sea urchin

What are the holes?

Here are two sea urchins called Echinocorys, both views being of the underside of the animal. They would have burrowed through the sediment on the sea floor. These photos show the mouth as the small hole in the lower side of both specimens, and the anus as the hole towards the top side of the shell. 

Find out more about sea urchins on the echinoderms pages.

Common name

Sea urchin


Echinoderms > Sea Urchins


Chalk, Upper

Time period

Upper Cretaceous


95 million years

Where found

Pinhay Bay

Found by

Richard Edmonds


Allhallows Museum, Honiton

Accession number