"Strange" visit

Dolphins, seals and porpoises are among the more unexpected visitors to London's River Thames and its estuary, a recent survey revealed.
A family of harbor porpoises has been spotted feasting on fish off Vauxhall Bridge in the center of the British capital, according to the survey by the Zoological Society of London.
Common seals were regular visitors to the waters around Canary Wharf to the east and the Thames Barrier, and they have also been seen near Tower Bridge, it said.
Even dolphins have been reported enjoying the waters near Southend in Essex, just inside the mouth of the river.