London’s Thames is Coming Back to Life With Whales, Dolphins, and Seals

If you mention whale watching, not too many people will think of London, but an environmental comeback has led to dozens of sightings in the Thames River in the past ten years.

A half century ago, the river was declared “biologically extinct” — meaning, it was so polluted nothing could live in it. Now, with improved water quality, fish have returned and attracted the larger marine animals encouraged by the new food supply.

http://www.goodnewsnetwork.org/londons-thames-coming-back-life-whales-dolphins-seals/