Down to a Sunless Sea

From Author Wars - https://authorwars.com/publications/down-to-a-sunless-sea-402408.html

Overview:

Title: Down to a Sunless Sea
Author: David Graham
Year: 1984
ISBN-10: 0449211649
Publisher: Fawcett Crest / Ballantine
Price: $3.95
Pages: 319
Binding: Paperback
Type: Novel
Title Reference: Down to a Sunless Sea
Notes: Info from OCLC which states this is the "1st Ballantine Books ed" even though there was a printing in 1982 which had the same statement. Month of publication from the publishing history stated in the 1986 printing. Price from the Amazon cover scan.