All photos by Dan R. Lynch unless otherwise noted.

Specimens on pages 58, 59 courtesy Bob Wright

Specimens on pages 6, 47, 68, 7172, 7677, 81, 84 courtesy Dean Montour

Specimen on page 91 courtesy Alex Fagotti

Pictured jewelry on page 87 courtesy Bob Wright

Used under license from Shutterstock.com: aceshot1: 51 (top) aga7ta: 25 (middle) Aprilflower7: 25 (top) aquapix: 12 (inset) 14. AuntSpray: 23 (bottom) buttchi 3 Sha Life: 17 (bottom) Cheng Wei: 25 (bottom) Crazy nook: 38 (left) Cristian Puscasu: 30 ehrlif: 47 (middle), 50 Ethan Daniels: 29 (bottom) Guillermo Guerao Serra: 22 (right) Kenneth Sponsler: 46, 47 (top) Marius Meyer: 16 Michael Deemer: 55 (top) mushika: 34 Narongsak Nagadhana: 40 Nicks Wanderings: 24 Northern Way of Life: 53 (bottom) Nuno Vasco Rodrigues: 15 (bottom left) Richard Whitcombe: 29 (top) scubaluna: 15 (bottom right) SeraphP: 13 (bottom) SL-Photography: 31 smspsy: 26 unterwegs: 17 (top) UWPhotog: 12 (main), 13 (top)

All illustrations and maps by Dan R. Lynch

Cover and book design by Jonathan Norberg

10 9 8 7 6 5 4 3 2 1

Petoskey Stone

Copyright © 2019 by Dan R. Lynch

Published by Adventure Publications

An imprint of AdventureKEEN

330 Garfield Street South

Cambridge, Minnesota 55008

(800) 678-7006

www.adventurepublications.net

All rights reserved

Printed in China

ISBN 978-1-59193-841-5 (pbk.); ISBN 978-1-59393-842-2 (ebook)