理查德·加尔森

Richard Carlson

饰：David Reed

朱莉·亚当斯

Julie Adams

饰：Kay Lawrence (as Julia Adams)

理查德·邓宁

Richard Denning

饰：Mark Williams

安东尼奥·莫雷诺

Antonio Moreno

饰：Carl Maia

内斯特帕瓦

Nestor Paiva

饰：Lucas

怀特·毕塞尔

Whit Bissell

饰：Dr. Thompson

贝尔尼·戈齐耶

Bernie Gozier

饰：Zee

亨利·A·埃斯卡兰特

Henry A. Escalante

饰：Chico (as Henry Escalante)

瑞科·布朗宁

Ricou Browning

饰：The Gill Man (in water) (uncredited)

Ben Chapman

饰：The Gill Man (on land) (uncredited)

佩里乐普斯

Perry Lopez

饰：Tomas (uncredited)

Sydney Mason

饰：Dr. Matos (uncredited)

罗德·雷德温

Rodd Redwing

饰：Louis, expedition foreman (uncredited)

Enrique Escalante

Enrique Escalante

饰：Chico (as Henry Escalante)

阿特·吉尔摩

Art Gilmore