Scott Baker
Himself - Whale Geneticist
John Calambokidis
Himself - Cascadia Research
Darlene Kenton
Herself - Woods Hle
Bruce Matz
Himself - Marine Mammal Institute

汤姆·塞立克
Narrator (voice)
Eric Olson
Self - Scripps
Stephen R. Palumbi
Self - Whale Geneticist
Stephen R. Palumbi
Self - Whale Geneticist