Shane Gross / Almaco jack (Seriola rivoliana) uses a discarded fishing net, drifting in the open ocean as shelter. The Bahamas.

Nick Hawkins / Fish seeking shelter around floating tree in open ocean. Off coast of Cocos Island National Park, Costa Rica.

Ingo Arndt / Antarctic Fur Seal (Arctocephalus gazella) in old Whaling Station, South Georgia, February

Tony Wu / Polar bear (Ursus maritimus) female with a single young cub, only a few months old, northern Svalbard, Norway, June

Alex Mustard / Spotlight goby (Gobiosoma louisae) looking out from inside a Yellow tube sponge (Aplysina fistularis), growing on a coral reef. Bloody Bay Wall, Little Cayman, Cayman Islands, British West Indies. Car...

Niall Benvie / Abandoned shelter near Stokkness, Iceland, September 2015.

Joris van Alphen / Montagu's harrier (Circus pygargus) mother attempting to shelter her chicks from the rain, Flevoland, the Netherlands. July.

Juan Carlos Munoz / Masked weaverbird (Ploceus velatus) nests in palm tree, Namaqualand, Northern Cape province, South Africa, September 2012.

Pascal Kobeh / Group of Short-finned pilot whales (Globicephala macrorhynchus) in open water, maybe the whole family with the male, the female and the calves, Costa Rica. Pacific ocean.

Enrique Lopez-Tapia / Rita Pudel, widow, with her son, in the room that serves as a shelter. In Nepal women who lose their husbands lose their own identity. Are rejected and forced to leave their homes. In many cases, they...

Carol Walker / Horse in snow storm with shed in background, USA

Eric Dragesco / A yurt of a Kyrgyz shepherd family on the steppe. Naryn National Park, Kyrgyzstan, Central Asia, November 2009.