Terrible tributaries

New York City's waterways have made headlines lately. First, Brooklyn's Gowanus Canal was named a Superfund site, meaning it will receive a federal cleanup. The New York Times posted a photo gallery of reader-submitted canal pictures.

Then, dolphins were seen in the East River and Newtown Creek, a creek near Long Island City that makes Gowanus Canal look as clean as an alpine spring. One commenter indicates whales have turned up in the Gowanus before, too. And recently a seal showed up in Staten Island.