A water-breathing human, the sole survivor of an underwater civilization called Atlantis, emerges from the ocean and has to learn to deal with the...

Elizabeth is kidnapped, one of dozens of scientists held prisoner on the island of Felicitos, controlled by special mineral springs that render their...

A human scientist capable of living underwater discovers similar alien life inhabiting human bodies, and looks to them for a clue to his origin.

The Cetacean is called upon to recover a space probe that crashes in the sea, and Mark soon learns that the probe is covered with thousands of tiny...