National Geographic Explorer

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Salvatore Vecchio

Narrator

Peter Coyote

Narrator

Lisa Ling

Self - Hostess

Robert Ballard

Self - Oceanographer

Keith David

Self - Narrator

Robert Urich

Host

Martin Sheen

Narrator

Richard Kiley

Self - Narrator

Tom Chapin

Self - Host

Peter Bergen

Self - Correspondent

Rodd Houston

Narrator

Leo Dickinson

Self

Gerald Durrell

Self

Michael Fay

Self

Lee Durrell

Self

Patrick Edlinger

Self

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