Within a space ship lying on the sea bottom is a mysterious sphere that promises each of the main characters some personal reward: military might, professional prestige, power, understanding. Trapped underwater with the sphere, the humans confront eerie and increasingly dangerous threats after communication with the alien object has been achieved.
As usual Crichton proves to be the best.Page by page suspenseful, elaborate and mind-blowing. Its a mixture of Human Psychology, Time travel, Space Travel, underwater Voyage.....One of the best sci-fi in my collections.