Anderson Cooper swims with the sharks on CNN tonight...

Anderson Cooper, CNN's Silver Fox, was at a launch party last night for his "Planet in Peril" documentary premiering on CNN tonight at 9 p.m.

Anderson, CNN chief medical correspondent Dr. Sanjay Gupta and National Geographic Channel host Lisa Ling examine effects of the Earth's rapidly growing population. Among other subjects, the trio investigates the spread of disease, oil and poverty in Nigeria, shark fishing and shark dive tours, African elephants and mountain gorillas. It is the second "Planet in Peril" special.

"I love the political coverage this year, I found it incredibly exciting, but it's always nice to change things up," Cooper told the New York Daily News. "You don't get the opportunity to go into the mountains in the Congo, then off to Rwanda every day, so it's something that I really jumped at."