Twenty years ago, Grant Archer and his team descended into Jupiter's vast ocean. Once inside, they discovered massive living creatures; "leviathans" which fed on particles and fought for survival against the dreaded darters. Archer barely escaped with his life, thanks to the help of one of the leviathans. Now the director of Station Gold orbiting Jupiter, Archer intends to send another crewed mission into the depths of the Jovian ocean to try to establish communication with the leviathans.
Four crew members are slated for the mission: Diedre Ambrose, a microbiologist; Andy Corvus, a scientist; Dorn, an ex-mercenary; and Max Yeager, designer of the ship to be used on the mission. However, other forces are at work as well. Katherine Westfall, a member of the IAA, is determined to see the mission fail. Convinced that Archer is wasting money, she has come to Station Gold to set him back in line. Westfall will stop at nothing to make sure that the mission fails, even if it means sacrificing the crew.
Finally, the ship sets down into the Jovian sea. Once there, the crew tries to establish contact with the leviathans. But the pressure takes a heavy toll on both the ship and crew. Will the crew be able to determine if the leviathans are in fact intelligent creatures, or will the ship succumb to the tremendous pressure exerted by the Jovian ocean?
I've read all of Bova's previous "Grand Tour" novels, and I was pleased to see that he decided to re-visit Jupiter. The story line from the first book was very good, and this book does a good job of picking up and expanding on it. Bova's books are full of adventure, and "Leviathans of Jupiter" continues in that tradition. Highly recommended.