Jack Dykinga / Winter snow storms cause wind-blown drifting along the canyon rim, Bryce Canyon National Park, Utah, USA, January.

Nick Hawkins / Fishing ropes wrap around the head and mouth, damaging the baleen of a severely entangled North Atlantic right whale (Eubalaena glacialis) in the Gulf of Saint Lawrence, Canada. Fishing gear entanglem...

Nick Hawkins / Fishing ropes wrap over the blowhole of a severely entangled North Atlantic right whale (Eubalaena glacialis) in the Gulf of Saint Lawrence, Canada. Fishing gear entanglement is a leading cause of dea...

Floris van Breugel / A skier glides past an erupting geyser in the Old Faithful geyser basin in Yellowstone National Park. The cold temperatures in the winter cause the geysers to release more steam than usual making the...

Georgette Douwma / Dead surgeonfish being 'cleaned' by a Bleusreak cleaner wrasse (Labroides dimidiatus). Many fish observed dead or dying on reefs in the Maldives, April 2012. Another episode of dying fish was in 2007....

Roy Mangersnes / Storm over the Central Kalahari Game Reserve, lightning sstrikes are the predominant cause of bush fires, Botswana, November

Eric Baccega / Eroded rocks at summit of Gorge de la Jonte with Peyreleau village in the background. Tarn, Cause, Cavennes, France.

Sergio Hanquet / Scientists performing Sperm whale (Physeter macrocephalus) calf necropsy on beach to determine cause of death, whale found drifting at sea. Tenerife, Canary Islands. 2010.

Laurie Hedges / Drone shot of cotton plantation, shot zooms out to reveal scale of field, cause of forest loss and deforestation in Amazon, Brazil

Laurie Hedges / Drone shot of a cotton plantation, cause of forest loss, Rondonia, Brazil, 2019.

Theo Bosboom / Dead guillemot washed up at the beach of Texel in the Netherlands. An estimated number of 20.000 guillemots died in January/February 2019 in the Netherlands. The cause is being investigated by scienti...

Theo Bosboom / Rough weather in the North sea, possibly the cause of death of guillemots. 20,000 died off the Netherlands in February 2019.