Think fishing is just for slowpokes and geezers? Not when the fish being sought are bluefin tuna. In this exclusive preview of NatGeo's new 10-party series "Wicked Tuna" (premiering Sun. April 1 at 10 p.m.), we get a look at fishermen in Gloucester, Mass. pursuing fish which can be worth up to $15,000 each. For them, the rules of engagement are simple: catch a fish and feed your family; lose a fish and go home broke.  
 
The series follows the crews of five boats in the Gloucester fleet: Tuna.com, Hard Merchandise, Odysea, Bounty Hunter and Christina, as they pursue “blue gold.”  While each boat is loaded with diesel engines, radio and sonar, it all goes out the window when they reel in a fish just like it was done centuries ago: man vs. fish, rod vs. fin. Watch the clip below to get a feel for what it's like to fish bluefin or just to listen to some wicked cool accents. Your choice.