Pascal Tordeux / Walnut (Juglans regia) in field of ripe barley before a storm, Ribemont, Picardy, France.

Pascal Tordeux / Walnut (Juglans) tree in snow and mist. Picardie, France, November.

Pascal Tordeux / Lone Walnut (Juglans) tree in a field of barley. Picardy, France.

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

Juan Manuel Borrero / Illustration of Walnut tree (Juglans regia). Detail of leaves and fruit. Pencil and watercolor painting.