Scott Leslie / Fish group schooling, Bonaire, Caribbean

Norbert Wu / Caribbean Reef Shark (Carcharhinus perezii) swimming through reef and schooling fish, Bahamas, Caribbean

Norbert Wu / Tiger Shark (Galeocerdo cuvieri) portrait, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) foraging for fish hidden in ocean floor, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) foraging for fish hidden in ocean floor, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) trio predating on school of snappers, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) chasing school of snappers, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) feeding on school of snappers, Bahamas, Caribbean

Doug Wechsler / Mockernut hickory (Carya tomentosa) nuts, Pennsylvania, USA, September.

Juan Carlos Munoz / Fossil of leaves of prehistoric Hickory plant (Carya sp) Castellon, Spain

Rolf Nussbaumer / Cedar Waxwing (Bombycilla cedrorum) adult perched among Pecan tree flowers (Carya illinoinensis). New Braunfels, Hill Country, Central Texas, USA, March.

Rolf Nussbaumer / Cedar Waxwing (Bombycilla cedrorum) adult perched on Pecan tree flowers (Carya illinoinensis). New Braunfels, Hill Country, Central Texas, USA, March.

Rolf Nussbaumer / Pecan tree (Carya illinoinensis), new leaves and blossoms, New Braunfels, Hill Country, Central Texas, USA, March.

Jack Dykinga / Hickory (Carya sp) in autumn colours, against blomeliads and palms on the canyon walls of Catrina Canyon, Cumbres National Park, Tamaulipas, Mexico

Scott Leslie / Fish group schooling, Bonaire, Caribbean

Scott Leslie / Yellow Moray (Gymnothorax prasinus) hiding in reef, Bonaire, Caribbean

Scott Leslie / Brittle Star on sponge, Bonaire, Caribbean

Scott Leslie / Lizardfish (Synodontidae) and dead coral reef, Bonaire, Caribbean

Scott Leslie / Spotted Cleaner Shrimp (Periclimenes yucatanicus) on anemone, Bonaire, Caribbean

Scott Leslie / Coral polyp pattern, Bonaire, Caribbean

Scott Leslie / Coral reef scene with schooling Grunts (Haemulon sp), Bonaire, Caribbean

Scott Leslie / Coral reef scene with schooling Grunts (Haemulon sp), Bonaire, Caribbean

Scott Leslie / Banded Butterflyfish (Chaetodon striatus) pair in coral reef, Bonaire, Caribbean

Scott Leslie / Fish swimming over coral, Bonaire, Caribbean

Scott Leslie / Goby (Gobiidae) swimming over coral, Bonaire, Caribbean

Norbert Wu / Sargassum Weed (Sargassum sp) growing on bottom will break off to form large floating patches of sargasso weed, Bahamas, Caribbean

Norbert Wu / Remora (Remora remora) trio, top of the head is modified with plates to stick onto animals, Bahamas, Caribbean

Norbert Wu / Lemon Shark (Negaprion acutidens) portrait, vulnerable species, Bahamas, Caribbean

Norbert Wu / Lemon Shark (Negaprion acutidens) pair, vulnerable species, Bahamas, Caribbean

Norbert Wu / Lemon Shark (Negaprion acutidens) photographed by diver, vulnerable species, Bahamas, Caribbean

Norbert Wu / Lemon Shark (Negaprion acutidens), vulnerable species, Bahamas, Caribbean

Norbert Wu / Lemon Shark (Negaprion acutidens) swimming over sea fans, Bahamas, Caribbean

Norbert Wu / Tiger Shark (Galeocerdo cuvieri) pair, Bahamas, Caribbean

Konrad Wothe / Bat group hanging from ceiling of Aripo Caves, Trinidad, West Indies, Caribbean

Konrad Wothe / Bat group hanging from ceiling of Aripo Caves, Trinidad, West Indies, Caribbean

Konrad Wothe / Bat group hanging from ceiling of Aripo Caves, Trinidad, West Indies, Caribbean

Konrad Wothe / Scarlet Ibis (Eudocimus ruber) flock roosting in tree, Trinidad, West Indies, Caribbean

Konrad Wothe / Bottlenose Dolphin (Tursiops truncatus) mother and baby swimming just below the surface, Caribbean

Hiroya Minakuchi / Humpback Whale (Megaptera novaeangliae) mother and calf underwater in breeding ground, Silver Bank, Dominican Republic

Hiroya Minakuchi / Humpback Whale (Megaptera novaeangliae) mother and young calf in breeding grounds, Silver Bank, Dominican Republic

Flip Nicklin / Sperm Whale (Physeter macrocephalus) social group underwater, Dominica

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) mother carrying calf, Little Bahama Bank, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) trailing bubbles, Little Bahama Bank, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) trailing bubbles, Little Bahama Bank, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) portrait underwater, Little Bahama Bank, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) pair swimming underwater, Little Bahama Bank, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) pair swimming in clear water, Little Bahama Bank, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) chasing fish, Little Bahama Bank, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) swimming with fish in mouth, Little Bahama Bank, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) foraging for hidden fish on ocean floor, Little Bahama Bank, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) trailing bubbles, Little Bahama Bank, Bahamas, Caribbean

Scott Leslie / Fish group schooling, Bonaire, Caribbean

Scott Leslie / Fish group schooling, Bonaire, Caribbean

Scott Leslie / Octocoral close-up showing polyps extended to feed, Bonaire, Caribbean

Scott Leslie / Fish group schooling, Bonaire, Caribbean

Scott Leslie / Coral polyps filter feeding, Bonaire, Caribbean

Scott Leslie / Coral polyps filter feeding, Bonaire, Caribbean

Scott Leslie / Coral polyps filter feeding, Bonaire, Caribbean

Scott Leslie / Coral polyps filter feeding, Bonaire, Caribbean

Scott Leslie / Coral polyp pattern, Bonaire, Caribbean

Scott Leslie / Brain Coral pattern, Bonaire, Caribbean

Scott Leslie / Coral pattern, Bonaire, Caribbean

Scott Leslie / Coral pattern, Bonaire, Caribbean

Scott Leslie / Coral pattern, Bonaire, Caribbean

Norbert Wu / Sea fans swaying in the current, Bahamas, Caribbean

Norbert Wu / Fish schooling near Sugar Wreck, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) playing with Sargassum Weed (Sargassum sp), Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) trailing bubbles, Little Bahama Bank, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) foraging for fish hidden in ocean floor, Bahamas, Caribbean

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) leaping from water, Little Bahama Bank, Bahamas, Caribbean