Juergen Freund / Cultured corals are propagated by cutting fragments of corals from mother colonies or brood stock. These coral pieces are attached to concrete mounts until they grow into a new colony, Onma Lodge, Kol...

Juergen Freund / Erik Koti holds some of his coral pieces. Cultured corals are propagated by cutting fragments of corals from mother colonies or brood stock. These coral pieces are attached to concrete mounts until it...

Andrew Walmsley / Mallard (Anas platyrhynchos platyrhynchos) ducklings following mother, Kaikoura, New Zealand, November

Frederique Olivier / Emperor penguin {Aptenodytes forsteri} tending chick in brood chamber on feet, Antarctica

Frederique Olivier / Emperor penguin {Aptenodytes forsteri} chick emerging from brood chamber on adult's feet, Antarctica

Frederique Olivier / Emperor penguin {Aptenodytes forsteri} male watching as its egg begins to hatch in brood chamber on feet, Antarctica

Frederique Olivier / Emperor penguins {Aptenodytes forsteri} two adults with chicks emerging from brood chamber on their feet, Antarctica

Chris Newbert / Yellow-striped Cardinalfish (Apogon cyanosoma) male with eggs in mouth, 40 feet deep, Solomon Islands

Doug Allan / Two-week-old Emperor penguin chick sits on parent's feet under brood pouch for warmth {Aptenodytes forsteri} Antarctica

Doug Allan / Emperor penguin {Aptenodytes forsteri} males incubating eggs - egg is under brood patch of skin above the feet. Antarctica

Morley Read / Brood chambers inside a Termite (Isoptera) nest with workers tending eggs, Napo Province in the Ecuadorian Amazon. Slow motion. (non-ex)

Morley Read / Brood chambers inside a Termite (Isoptera) nest with workers tending eggs, Napo Province in the Ecuadorian Amazon. Slow motion. (non-ex)