As it turns out Sealab was built on an ancient Indian burial ground and is now sinking into the ocean floor. The only hope to save Sealab is John Bear, Sealab's resident Native American. But in order ...

The Sealab crew attempts a daring rescue mission to Ice Station Zebra, one of whose inhabitants has turned to cannibalism. They are accompanied by a German who "came with the sub," bears more than a ...