Across the Sea of Suns
Author: Greg Benford
 
For twelve years, the interstellar craft LANCER had sped across the galaxy in search of the source of an astonishing radio broadcasr picked up on Earth - in English. 
Now the star Ra filled the view screens, and before the horrified gaze of the dedicated scientists who staffed LANCER, including Walmsley, veteran of the only previous alien 'encounter' the grim secret of the Universe was revealed.
A secret so deadly it threatened Earth, indeed all organic life everywhere.
Unless Nigel can use his alien-inspired clarity of mind to find a hint of rescue for Mankind. And that before the aliens who have taken over Earth's oceans can emerge triumphant from the life-and-death struggle they are waging for hegemony over man.
 
ORBIT/FUTURA BOOKS 1985 EDITION
ISBN: 9780708881590