Watch dolphin swimming in River Thames in London

This video shows the amazing sight of dolphins swimming in the River Thames in West London.

Published by the Independent, the close-up footage shows one dolphin swimming in the murky water of the river before breaking the surface.

According to the news website, the dolphins were spotted near Richmond on Saturday morning (20 April).

The footage, credited to the Rice Mill restaurant, shows the mammals near Twickenham Bridge.

Fears were raised last month about pollution in the river, with warnings that “alarmingly high” levels of E coli bacteria had been found ahead of the Oxbridge boat race.

The Thames is home to a number of mammals including seals and porpoises. Sightings of bottlenose dolphins are occasionally reported.