Dwayne ‘The Rock’ Johnson and Other Celebs Partake in Shark Week Festivities

It's the 34th year of the Discovery Channel's “Shark Week” extravaganza. To celebrate the legendary event, Dwayne “The Rock” Johnson will be the first-ever Master of Ceremonies. Comedian Tracy Morgan is interviewing a diver who lost two limbs. Shark diving expert Jimi Partington stars in “Great White Open Ocean” where he encounters a shark. Also, the guys from “Impractical Jokers” will be starring in their own segment.