The Deep Range
Description from the book
After a terrifying nightmare in outer space, Walter Franklin needed to discover a reason for living.
He found it in the ocean depths when stangers defied death to give life back to him.
Freedom to roam above and below the great waters should have been enough for any man - but Franklin was haunted by the memory of an echo....an echo that could solve the oldest mystery of the sea...
Condition - very good has signs of shelf wear and the pages have yellowed but is expected for its age (published 1971)