yup, there are a few dolphins in the real north Atlantic.
A local council waste disposal service got told off in Whales
(the country near England!) for cutting up a beached dolphin so that it would fit in the bin.
They left the body parts on the beach when none of them wanted to take it to a bin in their car.
That evening a resident noticed the bits of dolphin and recognised it as the same dolphin the town had rescued from the harbor a few years ago. It got on national news here.
*edit* don't even get me started on the whale in the thames story!