Sun star (Crossaster papposus).

A Sun star adds a splash of red colour to a background of kelp in a Scottish loch.

This image is published in the BWPA 2014 book and was used on the front cover of BSoUP's In Focus magazine, spring 2009.

Location: Loch Caron, Scotland

Camera Nikon D80, Tokina 10-17 @10mm