What is this? Well, its purple and its smaller than you think. It live is the Pacific Northwest and feed on algae that gives it its colour. Its colour provides a warning to possible predators not to coming looking for a lunch.
This brilliantly coloured creatures is a Colourful Dendronotus, Dendronotus diversicolor. These larger than average nudibranchs inhabit the temperate waters along the coast of British Columbia.
Beautiful to photograph due to their colour and easy to spot on the reef.
Thanks for reading.
Scott
For more images and stories - http://www.scottstevensonphotography.ca