Ceredigion: Moment dolphins kill porpoise for sport
Wildlife guide Josh Pedley has captured the moment his tour group spotted a porpoise being killed by a group of bottlenose dolphins.
The sunset trip from New Quay, Ceredigion, on Monday witnessed what is known as porpicide, which is rarely seen by humans.
Mr Pedley said the scene was "morbidly amazing".
Video edited by Finbar Cahill