The Babakina anadoni – less than half the size of a little finger – was sighted off the Isles of Scilly
An extremely rare multi-coloured sea slug has been spotted in British waters for the first time.
The multi-coloured sea slug, Babakina anadoni, measures just 2cm in length and was confirmed as a first sighting by the Cornwall Wildlife Trust and the Isles of Scilly Wildlife Trust.