Konrad Wothe / Red-crowned Crane (Grus japonensis) flock feeding in snow, Tsurui Ito Sanctuary, Japan

Piotr Naskrecki / Japanese Horseshoe Crab (Tachypleus tridentatus) in shallow, muddy waters very close to the shore, Japan

Norbert Wu / European Carp (Cyprinus carpio) group in feeding frenzy, Lake Powell, Arizona

Norbert Wu / European Carp (Cyprinus carpio) group, Lake Powell, Arizona

Sergey Gorshkov / European Carp (Cyprinus carpio), Volga Delta, Russia

Wild Wonders of Europe / Roggo / Common carp (Cyprinus carpio) Rhine, near Rhine falls, Schaffhausen, Switzerland, June 2009