Claudio Contreras / American crocodile (Crocodylus acutus) resting just above seagrass underwater, Banco Chinchorro Biosphere Reserve, Caribbean region, Mexico

Claudio Contreras / American crocodile (Crocodylus acutus) extreme close up with jaws open, Banco Chinchorro Biosphere Reserve, Caribbean region, Mexico

Richard Robinson / Shortfin mako shark (Isurus oxyrinchus) profile portrait, just below surface, off the West Coast of Auckland, New Zealand, February

Ingo Arndt / American Alligator (Alligator mississippiensis) split level, Everglades, USA, January.

Neil Aldridge / Lioness (Panthera leo) yawning in early morning light on Kariega Game Reserve, South Africa.

Cyril Ruoso / Golden monkey (Rhinopithecus roxellana) male showing canine teeth, Qinling Mountains, China.

Chris & Monique Fallows / Great white shark (Carcharodon carcharias) split level view, New Zealand, March.

Alex Mustard / Great hammerhead shark (Sphyrna mokarran) female at night with Bar jacks (Caranx ruber), South Bimini, Bahamas. The Bahamas National Shark Sanctuary. Gulf Stream, West Atlantic Ocean.

Bence Mate / Jacare / Yacare caiman (Caiman crocodilus yacare) two caymans, one with mouth open, Pantanal, Brazil.

Tony Wu / Sperm whale (Physeter macrocephalus) female at the ocean surface with her mouth open. This whale has just surfaced from foraging in deep water. Ogasawara or Bonin Islands, Japan.

Jabruson / African elephant (Loxodonta africana) ivory in piles, ready to be burnt by the Kenya Wildlife Service (KWS). The burn included 105 tons of elephant ivory worth over $150 million Nairobi National Park,...

Jabruson / African elephant (Loxodonta africana) ivory in piles, ready to be burnt by the Kenya Wildlife Service (KWS). The burn included 105 tons of elephant ivory worth over $150 million Nairobi National Park...