Scott Baker

Himself - Whale Geneticist

John Calambokidis

Himself - Cascadia Research

Darlene Kenton

Herself - Woods Hle

Bruce Matz

Himself - Marine Mammal Institute

Tom Selleck

Narrator (voice)

Eric Olson

Self - Scripps

Stephen R. Palumbi

Self - Whale Geneticist

Gisli Vikingson

Self

Sue Houghton

Guión

Mac Squier

Compositor de la Música Original

National Geographic Channel

Compañía de Produccion