Published by Lansdowne Press Pty Ltd, Melbourne, 1975.
Original German edition published in 1973 by Verlag Fritz Molden. 

Three sections: Invasion, Rxpansion and Consequences. Hass has a detailed look at the ecology of the sea, what man is doing to destroy it, and what we hope to gain from the sea. It is more ecologically orientated than his previous books.

Hardcover, dustjacket, 406 pages, many colour plates.

Price includes postage and packaging to anywhere in Australia