Discovery of Rare and Colorful Rainbow Sea Slug in UK Rock Pool

An "extremely rare" rainbow sea slug, typically found off the coasts of Spain, Portugal and France, was discovered in a rock pool in Falmouth, UK by Vicky Barlow, a member of The Rock Pool Project. The discovery is part of the "massive changes" sea life has experienced in the Southwest UK in recent years due to warming waters. Marine biologist Ben Holt expects more sightings of the rainbow sea slug, which thrives in warm water.