Due to the warming sea, a Rare Rainbow Sea Slug was Found in a UK Rock Pool


This is an exciting discovery! The rare rainbow sea slug (Glaucus atlanticus) is a species of small, blue sea slug, typically found in warmer waters such as those of the Indian and Pacific oceans. It is the first time this species has been found in a rock pool in the United Kingdom, suggesting that warming sea temperatures may be allowing the species to move north. The slug feeds on the venomous Portuguese man o war, and its bright blue and purple colouration is a warning to potential predators. This discovery is an important reminder of the need to monitor and protect our oceans, to ensure that rare and unique species such as this can continue to thrive.