There has been another sighting of a cheeky seal in Twickenham, much to the surprise of passers-by.

An excited lady stopped Tim Goodden, who was on a run with his dog when she spotted the seal.

Mr Gooden said: "It was right by a floating raft type boathouse, a few yards from the from the Thames path entrance to Marble Hill Park. It looks like it may be a baby, I hope it wasn't lost."

The seal was spotted on Tuesday night, at about 8pm.

Video by Tim Goodden

The Thames has a stable seal population, with previous sightings spotted in Hampton Court Palace and Canary Wharf. Seals have been regularly spotted on the Thames, especially near Teddington Lock.

Other critters swimming in the ecologically diverse river include eels and porpoises, often confused with dolphins, which have been seen elegantly jumping out the water as people row through Richmond.

This year alone, 89 harbour seals, 181 grey seals, ten harbour porpoises and four dolphins have been spotted, according to data gathered by The Zoological Society London (ZSL).

ZSL is currently operating a seal count; if you spot a seal (or a dolphin or a porpoise) let them know on their website.