|Behind the Scenes|
|Universe||Voyage to the Bottom of the Sea|
The Amphibians (as they call themselves) are a sapient oceanic humanoid species which can survive on land as well as underwater. They have evolved from the same general ancestors as humans and other vertebrates, but took a different evolutionary path. They live in underwater civilizations and claim their species is at least ten times as old as mankind. Due to this reason and their advanced technology, they regard themselves as a superior race. However, the concept of nuclear reactors is unknown to them. Their weapons are based on sonic waves. They also have means to genetically convert humans into their own kind.
- Voyage to the Bottom of the Sea, s04e13 - "Deadly Amphibians" (1967)