Who played the merman in Jason and the argonauts?

Answer 1

The actor who played Poseidon's son Triton is uncredited. In his biography, the film's director (Ray Harryhausen) could not remember the extra's name though they had searched months to find an actor to fill the role. The actor was cast because he had arms long enough to hold the rocks and have the model ship pass under his arm.

Stuntman Terry Richards told him that he had played Triton except for the sequence when the boat goes under his arms because his arms weren't long enough. Richards, a longtime stuntman famous as the sword-wielding Arab that Indiana Jones shoots, started his career in 1963 in England, where the scene was shot, so it's possible his account is accurate. Another forum claims that the actor Doug Robinson, who played Eupaemus (uncredited)in the film also played Triton. So perhaps the other actor with the long arms is Robinson, a fellow stuntman.