Synopsis:
A powerful undersea nuclear bomb test causes kelpbeds to mutate into 10 foot tall humanoid monsters dubbed "Chloryllfids". The monsters begin multiplying and swarm a south seas island, frightening off the natives and feeding on all the animals draining them of their fluids. Meanwhile the Gorgos can't find food to eat due to the radiation of the bomb test killing all nearby sea life, and begin searching for food. The starving monsters make their way to the South Seas island where the Chloryllfids are and feed on them all as a delicious snack!