Suzi Eszterhas / Sea Otter (Enhydra lutris) stranding supervisor, Halley Werner, carrying three week old orphaned pup, Alaska SeaLife Center, Seward, Alaska

Martin Camm / Carwardine / Illustration of magnetic fields and dolphins stranding (Wildlife Art Company).

Dave Watts / Dead Long finned pilot whales {Globicephala malaena} stranded on beach, Australia

Tui De Roy / Blacktip shark (Carcharhinus limbatus) and Magnificent frigatebird (Fregata magnificens) following the tuna-hunting sea lion into the shallows, sometimes stranding themselves whilst hunting. A group...

Tony Wu / Blue sea slug (Glaucus atlanticus) approaching the venom-filled tentacles of a Indo-Pacific Portuguese man-of-war (Physalia utriculus). Both were washed ashore as part of a mass, multi-day stranding o...

Tony Wu / Blue sea slug (Glaucus atlanticus) that was washed ashore with a mass, multi-day stranding of thousands of Indo-Pacific Portuguese man-of-war (Physalia utriculus). This species predates Portuguese man...

Tony Wu / Top-down view of an Indo-Pacific Portuguese Man-of-War (Physalia utriculus). This is one of many thousands that were part of a mass stranding in South Africa. Atlantic ocean.

Terry Whittaker / Bottlenose dolphin (Tursiops truncatus) female 'Spritie' with sunburn after stranding, Moray Firth, Highlands, Scotland. August.

Suzi Eszterhas / Northern Sea otter (Enhydra lutris) orphaned pup, aged 3 months, being lifted by Halley Werner, Stranding Supervisor, out of enclosure, Alaska Sea Life Center, Seward, Alaska, USA. September 2014.

Matthias Breiter / Arctic Ground Squirrel (Spermophilus parryii), Hudson Bay, Manitoba, Canada

Franco Banfi / Mass stranding of Humboldt squid (Dosidicus gigas) on shore of Baja California, Mexico, East Pacific Ocean. These mass strandings are thought to be caused by 'red tides' or build ups of toxic algae.

Franco Banfi / Mass stranding of Humboldt squid (Dosidicus gigas) on shore of Baja California, Mexico, East Pacific Ocean. These mass strandings are thought to be caused by 'red tides' or build ups of toxic algae.

Suzi Eszterhas / Sea Otter (Enhydra lutris) stranding supervisor, Halley Werner, taking blood sample from three week old orphaned pup, Alaska SeaLife Center, Seward, Alaska

Luciano Candisani / Antillean Manatee (Trichechus manatus manatus) young just rescued after stranding, getting a check-up from veterinarians, Brazil

Pete Oxford / Horseshoe Crab (Limulus polyphemus) dead after stranding during egg laying at high tide, Little St. Simon's Island, Georgia

Tui De Roy / Long-finned Pilot Whale (Globicephala melas) pod swimming closely together in coastal waters, showing burn from stranding, Golden Bay, South Island, New Zealand

Tui De Roy / Long-finned Pilot Whale (Globicephala melas) Department of Conservation rescue team escorting pod into deeper water after stranding, Golden Bay, South Island, New Zealand

Doug Perrine / Sperm whale {Physeter macrocephalus} baby receiving care after stranding, USA.

Doug Perrine / Sperm whale {Physeter macrocephalus} baby receiving care after stranding, USA.

Todd Pusser / Man looking at stranded Basking shark {Cetorhinus maximus}, North Carolina, USA.

Paul Johnson / Beached Sperm Whale, Heacham, Norfolk, England (Physeter macrocephalus)

Flip Nicklin / Beluga (Delphinapterus leucas) whale stranded at low tide, Somerset Island, Nunavut, Canada

Tui De Roy / Long-finned Pilot Whale (Globicephala melas) mass stranding with volunteers working to keep them cool, New Zealand

Tui De Roy / Long-finned Pilot Whale (Globicephala melas) stranded pod of 65, young volunteers comfort and cool tiny calf while waiting for rising tide, Golden Bay, New Zealand

Tui De Roy / Long-finned Pilot Whale (Globicephala melas) stranded pod of 65, young volunteers comfort and cool a cow and tiny calf while waiting for rising tide, Golden Bay, New Zealand

Tui De Roy / Long-finned Pilot Whale (Globicephala melas) largest male in stranded population of 65, volunteers keep animals cool while waiting for rising tide, Golden Bay, New Zealand

Tui De Roy / Pygmy Right Whale (Caperea marginata) stranded whales rescued by local volunteers, Golden Bay, New Zealand

Tui De Roy / Pygmy Right Whale (Caperea marginata) stranded whales rescued by local volunteers, Golden Bay, New Zealand

Tui De Roy / Long-finned Pilot Whale (Globicephala melas) rescued from stranding, Golden Bay, South Island, New Zealand

Tui De Roy / Long-finned Pilot Whale (Globicephala melas) kept cool with water from volunteers until high tide, Golden Bay, New Zealand

Tui De Roy / Long-finned Pilot Whale (Globicephala melas) kept cool with water from volunteers until high tide, Golden Bay, New Zealand

Flip Nicklin / Beluga (Delphinapterus leucas) whale stranded at low tide, Lancaster Sound, Nunavut, Canada

Flip Nicklin / Beluga (Delphinapterus leucas) stranded on shore awaits incoming tide, cries to protect eyes while out of water, Canadian Northwest Territories

Flip Nicklin / Beluga (Delphinapterus leucas) whale stranded at low tide, Somerset Island, Nunavut, Canada

Neil Lucas / Bottlenose dolphins catching fish by stranding {Tursiops truncatus} South Carolina, USA

Neil Lucas / Bottlenose dolphins catching fish by stranding {Tursiops truncatus} South Carolina, USA

Neil Lucas / Bottlenose dolphins catching fish by stranding {Tursiops truncatus} South Carolina, USA

Neil Lucas / Bottlenose dolphins catching fish by stranding {Tursiops truncatus} South Carolina, USA

Niall Benvie / Common jellyfish washed ashore {Aurelia aurita} Scotland, June summer

Neil Lucas / Bottlenose dolphins catching fish by stranding them {Tursiops truncatus} South Carolina, USA

Neil Lucas / Bottlenose dolphins catch fish by stranding them {Tursiops truncatus} South Carolina, USA

Niall Benvie / Common jellyfish mass stranding on beach {Aurelia aurita} Montrose, Scotland, UK

Dave Watts / Long finned pilot whale {Globicephala malaena} stranded on beach, still alive and thrashing tail, Australia

Juergen & Christine Sohns / American Mink (Neovison vison) on alert, Minnesota Wildlife Connection, Minnesota

Neil Lucas / Bottlenosed dolphins catching fish by stranding {Tursiops truncatus} South Carolina USA

Neil Lucas / Bottle nosed dolphins catching fish by stranding {Tursiops truncatus} South Carolina USA

Suzi Eszterhas / Sea Otter (Enhydra lutris) veterinarian, Pam Tuomi, and stranding supervisor, Halley Werner, examining rescued three month old orphaned pup, Alaska SeaLife Center, Seward, Alaska

Suzi Eszterhas / Sea Otter (Enhydra lutris) stranding supervisor, Halley Werner, carrying rescued three month old orphaned pup, Alaska SeaLife Center, Seward, Alaska

Suzi Eszterhas / Sea Otter (Enhydra lutris) stranding supervisor, Halley Werner, watching rescued three month old orphaned pup swimming, Alaska SeaLife Center, Seward, Alaska

Suzi Eszterhas / Sea Otter (Enhydra lutris) stranding supervisor, Halley Werner, bottle feeding rescued three month old orphaned pup, Alaska SeaLife Center, Seward, Alaska

Suzi Eszterhas / Sea Otter (Enhydra lutris) stranding supervisor, Halley Werner, carrying rescued three month old orphaned pup, Alaska SeaLife Center, Seward, Alaska

Sirachai Arunrugstichai / Caretaker from the 'Dugong Guards', a local volunteer group holding 'Marium', an orphaned Dugong (Dugong dugon) that was rescued from stranding, Koh Libong Island, Trang Province, Thai...

Sirachai Arunrugstichai / Orphaned Dugong (Dugong dugon) named 'Marium' that was rescued from stranding for rehabilitation feeding seagrass from caretaker. Raised in wild in natural seagrass bed at Koh Libong Island, T...

Sirachai Arunrugstichai / Orphaned Dugong (Dugong dugon) named Marium that was rescued from stranding for rehabilitation feeds on formula milk given by a caretaker while being raised in the wild without captivity. In the natur...

Roger Powell / Chestnut teal (Anas castanea) male swimming. Serendip, Victoria, Australia.

Doug Gimesy / Animal welfare advocate and wildlife rescuer David Nightingale rescuing a female Chestnut teal (Anas castanea) that has been shot at the opening of Victoria's duck hunting season, Kerang wetlands, Ker...

Doug Gimesy / Female Chestnut teal (Anas castanea) being euthanised by a veterinarian in a mobile triage centre set up, a few hours after the opening hours of duck hunting season, Kerang Wetlands, Victoria, Austral...

Doug Gimesy / Female Chestnut teal duck (Anas castanea) on water. Fairfield boat house, Fairfield, Victoria, Australia. ?Cropped