Tony Wu / Fin whale (Balaenoptera physalus) large vertebrate of the middle portion of exhumed carcass, Tokyo, Japan, November 2013

Tony Wu / Sperm whale (Physeter macrocephalus) vertebrae that was stranded on the small island in Vava'u, Tonga, Pacific Ocean

Roland Seitre / Goliath Imperial Pigeon (Ducula goliath) perched, Mount Khogi, Dumbea, Noumea, South Province, New Caledonia.

Suzi Eszterhas / Black Vulture (Coragyps atratus) portrait, Northern Costa Rica, Central America

Suzi Eszterhas / Black Vulture (Coragyps atratus) walking along the ground, Northern Costa Rica

Enrique Lopez-Tapia / Gentoo penguins (Pygoscelis papua) and whale vertebra. Cuverville Island. Antarctic Peninsula, Antarctica

Enrique Lopez-Tapia / Crabeater seals (Lobodon carcinophaga) on ice floe, Antarctic Peninsula, Antarctica

Enrique Lopez-Tapia / Gentoo penguins (Pygoscelis papua) walking past whale vertebra. Cuverville Island. Antarctic Peninsula, Antarctica.

Nick Upton / Shelduck pair (Tadorna tadorna) in flight over Willow trees, Gloucestershire, UK, April.

Alex Mustard / Detail photograph of the teeth of a Wolf fish (Anarhichas lupus). Gardur, south west Iceland, North Atlantic Ocean.

Bryan and Cherry Alexander / Whale vertebra at Mikkelsen Harbour, Trinity Island, Antarctica, February 2009.

Bryan and Cherry Alexander / Whale vertebra by the abandoned boat at Mikkelsen Harbour, Trinity Island, Antarctica, February 2009.

Bryan and Cherry Alexander / Tourist with whale vertebra at Mikkelsen Harbour, Trinity Island, Antarctica, February 2009.

John Cancalosi / Close-up of agatized Sauropod dinosaur vertebra, Utah, USA

John Cancalosi / Close-up of agatised Sauropod dinosaur vertebra, Utah, USA

Staffan Widstrand / Whalebone alley, Ittygran Island, Chukotka, Russia skeletal remains of whales that were once hunted in the area

Pete Oxford / Whale vertebrae, Whale bone alley, Yttygran Is, off Chukotka, E Siberia, Russia

Mark Carwardine / Whale vertebra from whaling, Port Lockroy, Antarctic

Matthias Breiter / Gentoo Penguin (Pygoscelis papua) chicks and whale bones, Port Lockroy, Weincke Island, Antarctic Peninsula, Antarctica

Matthias Breiter / Gentoo Penguin (Pygoscelis papua) feeding on whale bone for calcium, Port Lockroy, Weincke Island, Antarctic Peninsula, Antarctica

Roberto Rinaldi / Coral (Favia sp) fluorescence at night, captured using electronic strobes, Red Sea.

Matthias Breiter / Gentoo Penguin (Pygoscelis papua) chicks and whale bones, Port Lockroy, Weincke Island, Antarctic Peninsula, Antarctica

Matthias Breiter / Gentoo Penguin (Pygoscelis papua) and whale bones, Port Lockroy, Weincke Island, Antarctic Peninsula, Antarctica

Matthias Breiter / Gentoo Penguin (Pygoscelis papua) chick sheltered by whale bones, Port Lockroy, Weincke Island, Antarctic Peninsula, Antarctica

Suzi Eszterhas / Whale vertebra fossil, San Jose Island, Baja California, Mexico