Those who go down to the sea in ships, Who do business in great waters;
They have seen the works of the Lord, and His wonders in the deep.
Psalm 107: 23-24.
Published by Struik Nature (an imprint of Penguin Random House South Africa (Pty) Ltd)
Reg. No. 1953/000441/07
The Estuaries No. 4, Oxbow Crescent, Century Avenue, Century City, 7441
PO Box 1144, Cape Town, 8000 South Africa
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First edition 1981
Fully reworked edition 2018
Copyright in text, 2018: George and Margo Branch
Copyright in photographs, 2018: George Branch (unless otherwise indicated alongside image)
Copyright in artwork, 2018: Margo Branch (unless otherwise indicated alongside image)
Copyright in maps, 2018: Bryony van Wyk ( ) (unless otherwise indicated)
Copyright in published edition, 2018: Penguin Random House South Africa (Pty) Ltd
Print:978 1 43170 081 3
ePUB:978 1 77584 630 7
Publisher:Pippa Parker
Managing editor:Helen de Villiers
Project managers:Colette Alves, Gillian Black
Editors:Emsie du Plessis, Charles de Villiers
Typesetter:Deirdr Geldenhuys
Proofreader and indexer:Tina Mssmer
Penguin Random House is committed to a sustainable future for our business, our readers and our planet.
The publishers certify that this book has been independently peer reviewed
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the publishers and copyright holders.
The authors and publishers gratefully acknowledge The Mapula Trust for their support and interest, and for generous funding towards this publication.
Paper nautilus
A bountiful shore near Hole in the Wall
Horn-eyed ghost crab
EXTRACTS FROM REVIEWERS
A fascinating read beautifully illustrated combines accurate science with readability by the layman Professor John Field
A brilliant job of encompassing the complexities of managing for sustainability in a readable and interesting way Professor Kevern Cochrane
What a beautiful piece of work. I struggled to put it down Dr Maya Pfaff
Wonderful brings marine policy issues alive, in a fresh and communicative way Dr Saul Roux
An incredible piece of work: set to be the standard reference on southern African marine biology Professor Mike Lucas
Will feed the curiosity of a generation of marine biologists Dr Judy Mann-Lang
Captures important concepts succinctly and clearly in an easily understood manner Professor Anton McLachlan
Contents
Part 1 The ecosystems
Part 2 The human factor
Acknowledgements
P ride of place goes to the members of our extended families, who continue to inspire our love for nature and have been marvellously adaptable on our shared trips. We particularly appreciate how our daughter Bryony van Wyk has calmly nurtured us through the computer minefield to produce the graphics and the draft layout.
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