Mitsuaki Iwago / Blue Wildebeest (Connochaetes taurinus) mother giving birth, Serengeti

Konrad Wothe / African Elephant (Loxodonta africana) females tending to newborn calf, Kenya

Norbert Wu / Spotted Seahorse (Hippocampus erectus) male who has just given birth to babies, surrounded by his offspring

Norbert Wu / Weddell Seal (Leptonychotes weddellii) mother and newborn pup, Antarctica

Ralph Pace / Tourists and calving glacier, South Sawyer Glacier, Alaska

Yva Momatiuk & John Eastcott / Ice calving off glacier, Lake Argentino, Los Glaciares National Park, Patagonia, Argentina

Jaymi Heimbuch / Large piece of ice calving off Johns Hopkins Glacier, Glacier Bay National Park, Alaska

Vincent Grafhorst / Grant's Zebra (Equus burchellii boehmi) mother cleaning newborn, Amboseli National Park, Kenya

D. Parer & E. Parer-Cook / Tammar Wallaby (Macropus eugenii) fetus being born, still covered in membrane, Australia

D. Parer & E. Parer-Cook / Tammar Wallaby (Macropus eugenii) baby after clearing through the fetal membrane with its sharp claws, it begins to climb up toward the pouch with a swimming motion, Australia

D. Parer & E. Parer-Cook / Tammar Wallaby (Macropus eugenii) birth, baby is born enclosed in fetal membranes, Australia

Hiroya Minakuchi / Ice falling off glacier, Alaska