Characters played by Robert Ryan
Captain Nemo
Characters played by Chuck Connors
Senator Robert Fraser
Characters played by Nanette Newman
Helena Beckett
Characters played by Luciana Paluzzi
Mala
Characters played by John Turner
Joab
Characters played by Bill Fraser
Barnaby Bath
Characters played by Kenneth Connor
Swallow Bath
Characters played by Allan Cuthbertson
Lomax
Characters played by Christopher Hartstone
Phillip Beckett
Characters played by Ian Ramsey
Adam
Characters played by John J. Moore
Skipper
Characters played by Anthony Bailey
Sailor
Characters played by Alan Barry
Sailor
Characters played by Vincent Harding
Mate Navigator
Characters played by Hyma Beckley
Templemere Citizen
Characters played by Maxwell Craig
Nemo's Guard
Characters played by Margot Ley
Barmaid
Characters played by Michael McGovern
Sailor
Characters played by Ralph Nossek
The Engineer
Characters played by Jim O'Brady
Templemere Citizen
Characters played by Ann Patrice
Barmaid
Characters played by Patsy Snell
Barmaid
Characters played by Reg Thomason
Forbidden Area Guard