The British Divers Marine Life Rescue, which helps with rescues of stranded cetaceans and other marine animals, said they were sending their area coordinator down to the river to monitor the situation.
The Whale and Dolphin Conservation group said that beluga whales are identified by distinctive white markings and are typically found farther north.
Beluga whales (Delphinapterus leucas) normally live in Arctic and sub-Arctic waters, so any beluga in the Thames would be a long way from home. The last sighting of a Beluga whale was some three years ago, off the coast of Northumberland, in northern England.
The rare marine mammal was first spotted near Gravesend, Kent, on Tuesday afternoon and appeared to be "swimming strongly" and feeding in the estuary. It was spotted feeding near a number of barges.
Whale experts said a beluga may have ended up in the Thames after becoming disorientated and making a navigational error. The whale's location is between two major container docks, Tilbury and the new London Gateway port.
Known as the "canary of the sea" due to their chirps, clicks and whistles, beluga whales can range from 13 ft to 20 ft in length and have distinctive round foreheads, known as "melons".
In 2006, a whale died after it swam up the river into central London despite efforts to rescue the animal.
As day turns into evening here in Britain, many hope that the whale of 2018 will have a much happier ending.
She is the third woman to accuse Kavanaugh, a US Court of Appeals judge for the DC Circuit, of sexual misconduct. Judge has denied the allegation. "My client is not Deborah Ramirez (the woman discussed in Farrow's article)".
Democratic men believe Ford by a 54-to-16-percent margin, and Republican women believe Kavanaugh by a 57-to-6-percent margin. Rachel Mitchell, a Maricopa County attorney, will lead a round of questioning at the hearing on Thursday .
The women making the allegations, Trump said, "were coming out of the woodwork and, he said, "in my opinion totally political". About 200 people gathered in front of the Supreme Court building, chanting, "I believe Christine Ford". "It's very hard .
ABP News is a news hub which provides you with the comprehensive up-to-date news coverage from all over India and World. He said Islamabad was waiting for a formal response from India, adding: "Let us talk and resolve all issues".
Instagram had about 30 million users in 2012, the year it was purchased by Facebook for what appeared to be an eye-watering $1bn. It had no ads back then; it now features both display and video ads, although they're still restrained compared to Facebook .
The youngster has been in decent form this campaign and the Times (h/t Mirror ) claims that Wolves want £110m for the player. And the sight of Van Dijk hobbling off with a rib injury will be a concern for Klopp ahead of such a demanding run of games.
National Weather Service advisory, Kirk's sustained winds measured 40 mph and extended 70 miles north of the storm's center. Given sufficient warm water and low shear, Depression Nine should become a tropical storm sometime on Saturday.
After several leaks and rumours, Samsung has now officially unveiled its next device under the Samsung Galaxy A series. Under the hood, the smartphone is powered by an entry-level Snapdragon 425 quad-core processor , clocked at 1.4GHz.
President Trump attacked Ford, asserting she would have gone to the police as a 15-year-old if the attempted rape was "that bad". The allegations, which emerged in the USA media last week, have delayed Judge Kavanaugh's confirmation to the Supreme Court .
Naomi Osaka through to Pan Pacific Open final
Naomi Osaka's winning run came to an end as she fell to Karolina Pliskova in the final of the Pan Pacific Open in Tokyo . But Pliskova slowly turned the screw and broke for 3-2 with a fizzing backhand which her opponent swished well wide.
Ronaldo, Messi to miss FIFA The Best awards
She led Brazil to the Copa America in April, as they won all seven matches - although she only scored one of their 31 goals. Salah was usurped to UEFA's version of the gong last month, however, with Modric taking the prize.
Modric ends Ronaldo, Messi duopoly as world's best
Real Madrid captain Sergio Ramos hailed Luka Modric , saying the midfielder deserved the FIFA Best Men's Player award. Modric's success means Ronaldo remains tied with Messi having won FIFA's award in different guises five times each.
Alexis Sanchez's form becoming a concern for Manchester United
The United manager saw a run of three consecutive wins, all of them away from Old Trafford, come to an end in lethargic fashion. Manchester United manager Jose Mourinho is not happy after his side settled for a draw against Wolves at Old Trafford.