A blue-humped gray humpback whale was seen at least five meters long in the Thames, east of London, almost a year after a white whale appeared in the British capital for the first time.
"99.9 percent are sure it is a humpback whale. It has been seen many times," said a spokesman for the Port Authority of London, which oversees the river.
A white whale called “Penny” spent about three months in the Thames last year.
The humpback whale can weigh up to 40 tons and is 18 meters long.
Humpback whales migrate, cutting thousands of miles away