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Common Sea Urchins (very small) found at the Brough of Birsay. (17 1/2).

Common Sea Urchin: Echinus Esculentus (Linn). Orkney.

Common Sea Urchin: Echinus Esculentus (Linn). Found off Orphir shore.

Common Heart-Urchin: Echinocardium cordatum (Pamant?). Also 'Sea potato' (Graemsay).

Trawled in deep water off Westray.

Barnacles, attached to two glass floats. North Ronaldsay beach, October 1967.

Barnacles, growing on plastic foam(?) float.

Large Lobster toe

Wasp's Nest ; found by the donor in the lower eaves of a council house in Summerdale Drive, Kirkwall. May 1997.

Thornback Ray: Raja Clava. Plaster cast.