Coastal Fishes of Oman, John E. Randall, pp. 2, University of Hawaii Press, 1995, ISBN 978-0-8248-1808-1, ... By contrast, the Gulf of Oman is broadly open, and much of it is deep water; more than three-fourths of this gulf has a depth of 1000 m or more, and 3000 m depths are attained in its outer part ...