Jonathan Bird's Blue World

Belugas, Cousteau's Blue Hole and Spinner Dolphins (4x6)

Air date: Mar 22, 2014

A visit to the Mystic Aquarium in Connecticut spotlights beluga whales, including how they're trained and cared for. Also: a 400-foot-deep blue hole located on Andros Island in the Bahamas; a playful pod of spinner dolphins off the Hawaiian coast.