Cheryl-Samantha Owen / African penguin; (Spheniscus demersus); Rehabilitation at Southern African Foundation for the Conservation of Coastal Birds (SANCCOB); Cape Town; South Africa.

Gerrit Vyn / Flock of oiled Brown Pelicans (Pelecanus occidentalis) on a beach behind an oil covered containment boom. This nesting colony is the largest in Louisiana and was heavily contaminated by the BP Deepwat...

Gerrit Vyn / Aerial view of oiled bird nesting colonies in Barataria Bay area of the Mississippi River delta, with oil spill containment booms attempting to prevent more oil coming ashore. These waters are contami...

Gerrit Vyn / Laughing Gull (Leucophaeus atricilla) juvenile, heavily oiled as a result of the BP Deepwater Horizon oil spill in the Gulf of Mexico. Baldwin County, Alabama. USA, June 2010.

Gerrit Vyn / Human footprint and oiled beach from the BP Deepwater Horizon oil leak in the Gulf of Mexico. Baldwin County, Alabama. USA, June 2010.

Mitsuaki Iwago / King Penguin (Aptenodytes patagonicus) covered in oil, South Georgia Island

Ashley Cooper / Guillemot (Uria aalge) covered in oil on a black sand volcanic beach at Vik, on Iceland. September 2010.

Ashley Cooper / Guillemot (Uria aalge) covered in oil on a black sand volcanic beach at Vik, on Iceland. September 2010.

Mark Carwardine / Brown pelican (Pelecanus occidentalis) oiled bird being rescued for cleaning during Deepwater Horizon oil spill, Louisiana, Gulf of Mexico, USA, August 2010

Gerrit Vyn / Brown Pelican (Pelecanus occidentalis) covered in oil and very ill, standing on the beach after colony was oiled by the BP Deepwater Horizon oil leak in the Gulf of Mexico. Raccoon Island, Terrebonne...

Gerrit Vyn / Brown pelicans (Pelecanus occidentalis) and Great egrets (Ardea alba) roosting on mangroves in a Barataria Bay nesting colony. This colony was heavily oiled by the BP Deepwater Horizon oil leak. Plaq...

Krista Schlyer / Woman cleaning oiled brown pelican (Pelecanus occidentalis) after BP Oil spill in Gulf of Mexico, Louisiana, USA. June 2010.

Cheryl-Samantha Owen / Black footed penguin (Spheniscus demersus) close up of oil coated feathers, in rehabilitation at Southern African Foundation for the Conservation of Coastal Birds (SANCCOB) Cape Town, South Africa

Cheryl-Samantha Owen / Cape gannet (Morus capensis) covered in oil, in rehabilitation at the Southern African Foundation for the Conservation of Coastal Birds (SANCCOB) Cape Town, South Africa

Cheryl-Samantha Owen / Cape gannet (Morus capensis) covered in oil, in rehabilitation at the Southern African Foundation for the Conservation of Coastal Birds (SANCCOB) Cape Town, South Africa

Cheryl-Samantha Owen / Black footed penguins (Spheniscus demersus) in a pen, part of rehabilitation at Southern African Foundation for the Conservation of Coastal Birds (SANCCOB), Cape Town, South Africa 2011

Cheryl-Samantha Owen / Black footed penguin (Spheniscus demersus) being hand fed rehydration liquid at the Southern African Foundation for the Conservation of Coastal Birds (SANCCOB) Cape Town, South Africa 2011

Cheryl-Samantha Owen / Black footed penguin (Spheniscus demersus) close up of oil coated feathers, in rehabilitation at Southern African Foundation for the Conservation of Coastal Birds (SANCCOB) Cape Town, South Africa

Suzi Eszterhas / Western Grebe (Aechmophorus occidentalis) oiled bird, Monterey Bay, California, USA, April

Danny Green / 2020VISION / Grass Snake (Natrix natrix)oiled, portrait, Staffordshire, England, UK, April

Gerrit Vyn / Heavily oiled adult Snowy Plover (Charadrius nivosus). This bird was oiled by the BP Deepwater Horizon oil leak. Bon Secour National Wildlife Refuge. Baldwin County, Alabama, USA. June.

Gerrit Vyn / A lightly oiled Royal Tern (Thalasseus maximus) fledgling on the beach waiting to be fed. The bird was oiled as a result of the BP Deepwater Horizon oil leak in the Gulf of Mexico. Raccoon Island, Ter...

Gerrit Vyn / Royal Tern (Thalasseus maximus) juvenile oiled and waterlogged, as a result of the BP Deepwater Horizon oil leak, drowning in waters adjacent to a nesting colony on Queen Bess Island. Barataria Bay ar...

Gerrit Vyn / Royal Tern (Thalasseus maximus) juvenile oiled and waterlogged, as a result of the BP Deepwater Horizon oil leak, drowning in waters adjacent to a nesting colony on Queen Bess Island. Barataria Bay ar...

Gerrit Vyn / White Ibis (Eudocimus albus) lightly oiled adult foraging. Contaminated as a result of the BP Deepwater Horizon oil leak, in the Gulf of Mexico, Plaquemines Parish, Louisiana, USA, July 2010.

Gerrit Vyn / Aerial view of oiled and containment boomed salt marsh in the Baratari Bay area of the Mississippi River delta, contaminated as a result of the BP Deepwater Horizon leak. Plaquemines Parish, Louisiana...

Gerrit Vyn / Brown Pelican (Pelecanus occidentalis) juvenile heavily oiled as a result of the BP Deepwater Horizon leak in the Gulf of Mexico, sitting in mangoves. Raccoon Island, Terrebonne Parish, Louisiana, USA...

Gerrit Vyn / Brown Pelican (Pelecanus occidentalis) juvenile heavily oiled as a result of the BP Deepwater Horizon leak in the Gulf of Mexico, sitting in mangoves. Raccoon Island, Terrebonne Parish, Louisiana, USA...

Gerrit Vyn / Brown Pelican (Pelecanus occidentalis) lightly oiled juvenile on shoreline. Hundreds of these birds from the largest Louisiana nesting colony on Raccoon Island, were badly oiled as a result of the BP...

Gerrit Vyn / Oiled beach, contaminated by the BP Deepwater Horizon oil leak. Baldwin County, Alabama, USA, June 2010.

Gerrit Vyn / Aerial view of oiled bird nesting colonies in Barataria Bay area of the Mississippi River delta, contaminated by oil from the BP Deepwater Horizon leak in the Gulf of Mexico. Plaquemines Parish, Louis...

Gerrit Vyn / Great Blue Heron (Ardea herodias) lightly oiled as a result of the BP Deepwater Horizon oil spill in the Gulf of Mexico. Standing in a coastal marsh. Gulf Islands National Seashore, Florida. USA, June...

Gerrit Vyn / Human footprints and oiled beach from the BP Deepwater Horizon oil leak in the Gulf of Mexico. Baldwin County, Alabama. USA, June 2010.

Gerrit Vyn / Houses and oiled beach from the BP Deepwater Horizon oil leak. Baldwin County, Alabama. USA, June 2010.

Gary K. Smith / Garden secateurs being oiled in early spring, Norfolk, UK, March

Gary K. Smith / Garden hand tools being oiled in early spring, Norfolk, UK, March

Colin Seddon / Oiled northern gannet. Somerset rescue centre (Morus bassanus) UK Paul Kennedy holding bird

Colin Seddon / Cleaning oiled Guillemot at RSPCA wildlife hospital Taunton. 1997.

Suzi Eszterhas / Barn Owl (Tyto alba) rehabilitator, Isabel Luevano, holding oiled owl, International Bird Rescue, Fairfield, California

Flip de Nooyer / Common Murre (Uria aalge) and Little Auk (Alle alle) dead on the beach, Europe