The novel “Ocean on Top” by Hal Clement was published for the first time serialized in the magazine “Galaxy” in 1967 and in 1973 as a book.

When three Power Board agents disappear in the same area of ​​the Pacific Ocean within a few months, it becomes impossible to believe that these are just unfortunate accidents. The fact that it all started with the investigation of an energy leak makes the disappearances even more suspicious.

The President chooses a new agent to solve the mystery. While investigating in the ocean, the agent ends up in the midst of a storm that causes his boat to sink. When his emergency tank approaches the ocean floor, he discovers to his surprise a decidedly artificial lighting system. His surprise increases when he discovers that there are people living at the bottom of the ocean.