Catriona tema is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Trinchesiidae.

[1] This species was described from Teshie, between Accra and Tema, Ghana.

[1] The size of the first specimen found of this species was 11 mm.

There are about 40 cerata, translucent with a broad white band below the tip and scattered white glands in the epidermis of the lower part.

Catriona tema was found on the sea shore at low water on the hydroid Pennaria disticha, family Pennariidae.