A beluga whale that was spotted in the River Thames will be helped by a rescue team to make sure it leaves the river safely.
A "very lost" beluga whalespotted in the Thames on Tuesday has been sighted again.
"Beluga whales inhabit cold, Arctic waters off Greenland, Svalbard and in the Barents Sea", the group said.
"Hopefully instinct will soon kick in and the beluga will leave the estuary and go out into the north sea and then head north where it should be", the scientist explained.
"We're hoping if we give it enough space and keep an eye on it, it will find its own way out of the Thames to an environment that's more appropriate for it", said Tanya Gerry, of the Port of London Authority, which is monitoring the whale.
The Whale and Dolphin Conservation society said the whale could be ill, or young and separated from his or her pod.
"It's very unusual and it's not a very good place", Julia Cable, spokeswoman for British Divers Marine Life Rescue, which saves marine animals in distress, told AFP.
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For anyone twitching the Beluga it's been feeding around the barges for the last hour and hasn't moved more than 200m in either direction.
The last reported sighting of beluga in United Kingdom waters was in 2015, when two were spotted off the Northumberland coast and one in Northern Ireland.
The whale was first spotted on Tuesday by ecologist Dave Andrews, who tweeted footage of the white animal.
Media captionWATCH LIVE: Aerial shots after reported sighting of a Beluga whale in the River Thames.
In a statement on its website, ORCA's Head of Science & Conservation, Lucy Babey, said: "It's an incredibly unusual sighting, with the most recent record of belugas around the United Kingdom being in Northumberland in 2015".
We would encourage people to look from the land if the whale is still close to the coast.