Robert Ballard (Self - Explorer At Large, National Geographic Society + President and Founder, Ocean Exploration Trust), Barbara Earle Ballard (Self - Director, Special Projects, National Geographic 1988 to 1990), Ben Ballard (Self - Bob's Son), Chet Ballard (Self - Bob's Dad, Unaired Interview, July 1989), Doug Ballard (Self - Bob's Son), Emily Ballard (Self - Bob's Daughter), Harriett Ballard (Self - Bob's Mom, Unaired Interview, July 1989), Todd Ballard (Self - Bob's Son, Unaired Interview, July 1989), Cassie Bongiovanni (Self - Director of Mapping Operations, Caladan Oceanic), Peter Jennings (Self - World News Tonight)