Cruise ship passengers bathing in sea warmed by volcanic activity, Deception Island, Antarctic Peninsula, Antarctica, Polar Regions

Young cook holding burning pan hand

Grey Heron warming on a tuft of sedge, France

Red-eared pond sliders, Parc de la tête d'or Lyon France

Glanville Fritillary on Plantain, Prairie Fouzon France

Dewy Mayfly warming, Prairie Fouzon France

Hanuman Langurs on rock at dawn, Rajasthan India

Plumbeous Rail warming, El Calafate Argentina

A Whooper Swan (Cygnus cygnus) in the hot springs of Hokkaido, Japan.

Cape fur seal (Arctocephalus pusillus), Cape Cross, Namibia

A Whooper Swan (Cygnus cygnus) in the hot springs of Hokkaido, Japan.

A Nile crocodile, Crocodylus niloticus, basking near the Chobe River. Chobe River, Chobe National Park, Kasane, Botswana.

A meerkat or suricate (Suricata suricatta) in the early morning light. Cradock, Eastern Cape. South Africa.

A meerkat or suricate (Suricata suricatta) in the early morning light. Cradock, Eastern Cape. South Africa.

Slow worm (Anguis fragilis) on a carpet of dead leaves on a bocage slope, seeking the warmth of the sun in spring, France

African Jacana warming his chicks, East Africa