The hydrophone placed by marine scientists picked up an extremely strange and low frequency sound. Shortly after, communications from the deep sea base, Bethesda, ceased. Operation: Under Water! As an ocean ranger, enter the sea base, Bethesda, and eliminate the ocean depth creatures!

The hydrophone placed by marine scientists picked up an extremely strange and low frequency sound. Shortly after, communications from the deep sea base, Bethesda, ceased. Operation: Under Water! As an ocean ranger, enter the sea base, Bethesda, and eliminate the ocean depth creatures!