The Giant Sea Serpent (大ウミヘビ Ōumihebi, lit. Giant Sea Snake) is a kaiju who first appeared in the 1967 Toho film King Kong Escapes. Patrolling the waters around Mondo Island, the Giant Sea Serpent was confronted by King Kong when it approached the Hover Car as it made its way back to the Explorer. The serpent constricted its body around Kong, but the giant ape was able to triumph and threw the defeated serpent aside into the water.