Photo Acknowledgments
The images in this book are used with the permission of: © jrphoto6/iStock.com, pp. 4, 25 (left);
© Maksimilian/Shutterstock.com, p. 5; © Steven J. Kazlowski/Alamy Stock Photo, p. 6; © BMJ/
Shutterstock.com, p. 7; © SeppFriedhuber/iStock.com, p. 8; © zanskar/iStock.com, p. 9; © Red Line
Editorial, p. 10; © JohnPitcher/iStock.com, pp. 11, 15; © PeterZwitser/iStock.com, pp. 12, 25 (bottom);
© Bryan and Cherry Alexander/Science Source, pp. 13, 14; © dagsjo/iStock.com, pp. 16, 29 (top);
© ElementalImaging/iStock.com, p. 17; © Jhaviv/iStock.com, p. 18; © ElliotHurwitt/iStock.com,
p. 19; © Peter Steffen/DPA/Getty Images, p. 20; © USO/iStock.com, pp. 21, 24, 26; © Kenneth_A_
Meisner/iStock.com, p. 22; © 49pauly/iStock.com, p. 23; © Hans-Martin Issler/AP Images, p. 25
(top); © robertharding/Alamy Stock Photo, p. 25 (right); © WorldFoto/Alamy Stock Photo, p. 27;
© Vladimir Melnik/Shutterstock.com, p. 29 (middle top); © pomarinus/iStock.com, p. 29 (middle
bottom); © Videologia/iStock.com, p. 29 (bottom).
Front Cover: © Mikko Hyvärinen/Shutterstock.com.
Main body text set in Adrianna Regular 14/20.
Typeface provided by Chank.
Index
Arctic region, 9, 11
birds, 8, 14
climate change, 13
coat, 6, 16–17
cubs, 22–23, 25
ecosystem, 12, 14
fat, 8, 14, 17, 22, 24
fights, 26–27
fish, 12
habitat, 8–11
nictitating membrane, 18
North Pole, 10
Norway, 9
paws, 19
predators, 6, 8, 12, 15, 23, 27
sea ice, 4, 11, 13–14
seal, 4–8, 11–12, 14, 18, 20, 27
size, 15
walking hibernation, 24
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