Rick Rosenthal on Filming "Superfish: Bluefin Tuna"

Multiple award-winning underwater cinematographer, Rick Rosenthal, discusses one of the biggest challenges when filming the majestic and powerful bluefin tuna. Tune into the National Geographic Channel at 9pm EST for the first ever premiere of "Superfish: Bluefin Tuna". And, if this peaks your interest, find out more about global tuna conservation at