John Cancalosi / American toad (Bufo americanus) several males attempting to mate with one female, New York, USA

John Cancalosi / American toad (Bufo americanus) several males attempting to mate with one female, New York, USA

John Cancalosi / American toad (Bufo americanus) several males attempting to mate with one female, New York, USA

John Cancalosi / American toad (Bufo americanus) several males attempting to mate with one female, New York, USA

Kathryn Jeffs / Southern Type B Killer whales (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli) dragging seal under water to drown it, Antarctica. Taken on location for BBC Frozen Planet series, January 2...

Christian Ziegler / Long-legged Bat (Macrophyllum macrophyllum) flying over water surface looking for dead and drowning insects, Smithsonian Tropical Research Station, Barro Colorado Island, Panama

Christian Ziegler / Long-legged Bat (Macrophyllum macrophyllum) flying over water surface looking for dead and drowning insects, Smithsonian Tropical Research Station, Barro Colorado Island, Panama

Gerrit Vyn / Royal Tern (Thalasseus maximus) juvenile oiled and waterlogged, as a result of the BP Deepwater Horizon oil leak, drowning in waters adjacent to a nesting colony on Queen Bess Island. Barataria Bay ar...

Gerrit Vyn / Royal Tern (Thalasseus maximus) juvenile oiled and waterlogged, as a result of the BP Deepwater Horizon oil leak, drowning in waters adjacent to a nesting colony on Queen Bess Island. Barataria Bay ar...

Mary McDonald / Carcasses of drowned Wildebeest {Connochaetes taurinus} swept downstream from a previous river crossing, Masai Mara GR, Kenya.

Todd Pusser / Transient killer whale attacking Grey whale calf. Monterey Bay, California, USA.

Mark Moffett / Carpenter Ant (Camponotus sp) group safely carry large insects up the slippery walls of a pitcher plant without getting trapped and drowning in the plant's digestive juices, Brunei, Borneo

Hermann Brehm / Female elk (Cervus elaphus) watch with concern as calf struggles in high water, Yellowstone River, Yellowstone NP, Wyoming, USA

Christian Ziegler / Long-legged Bat (Macrophyllum macrophyllum) flying over water surface catching dead and drowning insects, Smithsonian Tropical Research Station, Barro Colorado Island, Panama

Christian Ziegler / Long-legged Bat (Macrophyllum macrophyllum) flying over water surface catching dead and drowning insects, Smithsonian Tropical Research Station, Barro Colorado Island, Panama

Mark Moffett / Carpenter Ant (Camponotus sp) group safely carry large insects up the slippery walls of a pitcher plant without getting trapped and drowning in the plant's digestive juices

Sue Flood / Killer whale {Orcinus orca} drowning Grey whale calf {Eschrichtius robustus} CA USA