Passengers on observation deck of Sea Life Surveys vessel Sula Beag watching a Bottlenose dolphin (Tursiops truncatus) bow riding in the Sound of Mull, Inner Hebrides, Scotland, UK, July 2011. 2020VISION Exhibition. 2020VISION Book Plate. Did you know? 28 species of dolphin have been seen around the UK, but bottlenoses and common dolphins are regular visitors.