Spotted hyena (Crocuta crocuta) at the remains of a zebra kill, Tanzania, East Africa, Africa

Brown hyena (Hyaena brunnea) scavenging remains of lion kill, Kgalagadi Transfrontier National Park, Northern Cape, South Africa, Africa

Adult fin whale (Balaenoptera physalus) carcass in Holmabukta off the northwest of the Svalbard Archipelago, Norway

Upper and lower jaw bones (+ one rib) of a blue whale (Balaenoptera musculus) at an old whaling station. BBC Broadcaster John Craven for scale. Snaefellsness Peninsular, Iceland.

Bottlenose dolphin (Tursiops truncatus aduncus) washed up dead on a beach. Sharp teeth visible. Arabian Gulf, UAE.

Beached female California Gray Whale (Eschrichtius robustus) carcass in the calm waters of San Ignacio Lagoon, Baja, Mexico.

Striped dolphin (Stenella coeruleoalba) washed up after a storm. Markings in the skin indicated it died in a fishing net. Scilly Isles, UK

Upper and lower jaw bones (+ one rib) of a blue whale (Balaenoptera musculus) at an old whaling station. Snaefellsness Peninsular, Iceland.

Striped dolphin (Stenella coeruleoalba) washed up dead on a beach. Rows of up to 200 sharp teeth clearly visible. Scilly Isles, UK

Stranded Bottlenose dolphin (Tursiops truncatus) on beach, Mauritania (RR)

Floating California Gray Whale (Eschrichtius robustus) carcass being scavenged by gulls in San Ignacio Lagoon, Baja, Mexico.

Loggerhead turtle (Caretta caretta) carcass on beach, Southern Morocco (RR)

Wide angle of dead Sperm whale (Physeter macrocephalus) floating at sea, surrounded by scavenging fulmars, Faroes Trough

Striped dolphin (Stenella coeruleoalba) washed up dead on a beach. Scilly Isles, UK

Black-backed jackal (Canis mesomelas) feedin on the remains of a killed impala (Aepyceros melampus), Okavango Delta, Botswana, Africa

Corno Grande, Campo Imperatore, Abruzzo, Italy