Yes, it's just a stuntman in a rubber lizard suit, but this atmospheric frightfest has more to offer than it's (well-deserved) shocks. A team of paleontologists take a tramp steamer deep into the Amazon jungle searching for the remains of prehistoric 'gill man' and surprise, he still around to wreak havoc on their mission. Take it all at kitschy face value or look closer and see the real 'creature' here is the male ego of the two lead scientists (Richard Carlson, Richard Denning) who vie for the attention of their female cohort (Julie Adams). It's monster as symbolic sexual frustration. When the big reptile ogles her in a famous underwater pas de deux, the chills are sexy AND spine tingling.