Ingo Arndt / Olive Ridley Sea Turtle (Lepidochelys olivacea) females digging nests on beach in which to lay eggs, Ostional Beach, Costa Rica

Michael Durham / American Elk (Cervus elaphus nelsoni) male newborn calf less than 24 hours old Newborn calves like this one will lay still and do their best to hide when a threat is perceived, Sled Springs Elk Study...

Michael Durham / American Elk (Cervus elaphus nelsoni) male newborn calf less than 24 hours old Newborn calves like this one will lay still and do their best to hide when a threat is perceived, Sled Springs Elk Study...

Mark Moffett / Phorid fly attacks leaf carrying Leafcutter Ant (Atta cephalotes) the fly will lay an egg from which a parasitizing maggot will hatch, Belize

Sean Crane / Leatherback Sea Turtle (Dermochelys coriacea) female coming on shore to lay her eggs, Grande Riviere, Trinidad, Caribbean

Sean Crane / Leatherback Sea Turtle (Dermochelys coriacea) female coming on shore to lay her eggs, Grande Riviere, Trinidad, Caribbean

Ingo Arndt / Olive Ridley Sea Turtle (Lepidochelys olivacea) female digging nest on beach in which to lay eggs, Ostional Beach, Costa Rica

Ingo Arndt / Olive Ridley Sea Turtle (Lepidochelys olivacea) female coming ashore to lay eggs, Ostional Beach, Costa Rica

Michael Durham / American Elk (Cervus elaphus nelsoni) male newborn calf less than 24 hours old Newborn calves like this one will lay still and do their best to hide when a threat is perceived, Sled Springs Elk Study...

Michael Durham / American Elk (Cervus elaphus nelsoni) male newborn calf less than 24 hours old Newborn calves like this one will lay still and do their best to hide when a threat is perceived, Sled Springs Elk Study...

Nigel Cattlin / Parasitoid wasp (Aphidius spp.) female, about to lay eggs in Peach potato aphid (Myzus persicae) with ovipositor pointing forward, England, UK.

Espen Bergersen / Walrus (Odobenus rosmarus) lying on its stomach, resting. Svalbard, Norway. August.