Robert Irwin on His Dad's Legacy and How His Family Reacted to Him Swimming With Sharks (Exclusive)

Robert Irwin, 17, lovingly cradles his niece Grace Warrior, four months, in photos

Robert Irwin Swims With Massive Manta Ray to Kick Off 'Shark Week'

Fans tell Robert Irwin to 'be careful' as he swims with a giant manta ray