Dancing With Sharks” is a reality dance competition for Discovery Channel’s Shark Week pairing dancing divers with real sharks and hosted by Tom Bergeron.

Former “Dancing With the Stars” host Tom Bergeron steps up for a marketing masterstroke by Discovery Channel’s “Shark Week” — “Dancing with Sharks,” where humans and 20-foot-long hammerhead sharks do a little mambo.

Tom Bergeron's hosting a new dance competition ... though the new contestants are a whole lot more dangerous than a group of celebrities -- they're some of the ocean's most dangerous predators.