Michael Pitts / Hawaiian monk seal caught in fishing tackle off Kure Atoll, Pacific Ocean. The seal was subsequently freed and released by the photographer.

Sergio Hanquet / Face mask, used as PPE during Covid-19, improperly disposed of in the sea, Tenerife, Canary Islands

Dimitris Poursanidis / Abandonded fishing gear in seagrass meadow, with red sea squirt (Halocynthia papillosa), Samaria National Park, Chania, Crete, Greece

Dimitris Poursanidis / Abandonded fishing gear in seagrass meadow (Posidonia oceanica), Agia Pelagia, Heraklion, Crete, Greece

Shane Gross / Two grey triggerfish (Balistes capriscus) fight over a large piece of plastic floating at the surface among sargassum seaweed (Sargassum natans) in the Sargasso Sea, Atlantic Ocean.

Sergio Hanquet / Loggerhead turtle (Caretta caretta) young animal tangled in fishing net. Tenerife, Canary Islands. 2019.

Alex Mustard / Jellyfish (Catostylus sp.) swimming in a slick of plastic debris. Turtles feed on jellies such as these and this photo shows how easily they can get confused and feed on plastic instead. Indian Ocean...

Alex Mustard / Carapace of a dead olive Ridley turtle (Lepidochelys olivacea) entangled in discarded fishing gear. Indian Ocean, off Sri Lanka.

Alex Mustard / Jellyfish (Catostylus sp.) swims beneath a slick of plastic debris. Indian Ocean off Sri Lanka. Highly commended in the Environmental Report section, Montphoto competition 2019

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...

Franco Banfi / Floating, abandoned net in the ocean, Dominica, Caribbean Sea, Atlantic Ocean.

Shane Gross / Almaco jack (Seriola rivoliana) uses a discarded fishing net, drifting in the open ocean as shelter. The Bahamas.

Tony Wu / Plastic bottles and other rubbish, found on a beach in Yamaguchi Prefecture, Japan.

Juergen Freund / Moral eels, Urchins, Cuttlefish, Shrimp and other marine life living within a discarded tyre and fishing net under a ships' harbour, Maluku, Indonesia. November.

Tui De Roy / Short tailed albatross (Phoebastria albatrus) subadult with fish-hook and monofilament line embedded in throat. Tsubamezaki, Torishima Island, Japan. December.

Tui De Roy / Short tailed albatross (Phoebastria albatrus) subadults courting, one with fish-hook and monofilament line embedded in throat. Tsubamezaki, Torishima Island, Japan. December.

Tui De Roy / Waved albatross (Phoebastria irrorata) on nest, with fish hook in throat, Punta Suarez, Espanola Island, Galapagos.

Seth Patterson / A compilation of items found washed up along a half mile stretch of the high tide line of South Padre Island, Texas. October 2016. Some of the plastic bottles and bags of signs of nip marks from hun...

Laurie Campbell / Discarded plastic rope and commercial fishing netting washed up on shore at Luskentyre, South West Harris, Western Isles / Outer Hebrides, Scotland, May 2016

Luis Quinta / Imperial blackfish (Schedophilus ovalis) sheltering under discarded fishing ropes drifting off Pico island, Azores, Portugal, May.

Franco Banfi / Genius River Bridge, made with marine debris by artist Tico 'Pancho', Chatham Bay, Cocos Island National Park, Costa Rica. September 2012.

Cyril Ruoso / Pollution washed up in mangroves, Sungei Buloh Natural Park, Singapore. Non-ex

Jordi Chias / Loggerhead turtle (Caretta caretta) trapped in an abandoned drifting net, Balearic Channel, Mediterranean sea.

Jordi Chias / Loggerhead turtle (Caretta caretta) trapped in an abandoned drifting net, Balearic Channel, Mediterranean sea.

Cheryl-Samantha Owen / Cape gannet (Morus capensis) being washed to remove the oil that coats it feathers. After it will be hand reared in rehabilitation at the Southern African Foundation for the Conservation of Coastal B...

Georgette Douwma / Plastic bags floating at the surface of the sea. Bunaken National Park, North Sulawesi, Indonesia.

Juergen Freund / Land Hermit crab using a plastic bottle cap as its home. Kavieng, Papua New Guinea, June 2010

Juergen Freund / Siltation underwater from a river after the rains with diver, Papua New Guinea

Juergen Freund / Umbrella and other human waste thrown out into the coastal waters, settling on the ground becoming marine life habitat, Moluccas Islands, Indonesia, December 2009

Georgette Douwma / Painted Frogfish (Antennarius pictus), juvenile perched on bottle top. Rinca, Komodo National Park, Indonesia.

Adrian Davies / Orange coloured Seashore Lichens (Xanthoria parietina) and Sea Ivory (Ramalina siliquosa) UK, August

Alex Mustard / Female Grey seal (Halichoerus grypus) tangled in a discarded fishing net, Lundy Island, Devon, England, UK, July 2010.

David Fleetham / Sargasum frogfish (Histiro histiro) near the surface floating on discarded polypropylene rope, Hawaii.

Sue Daly / Plastic bag floating in the sea, resembling a jellyfish swimming Dangerous to sea turtles

Sue Daly / Plastic bag floating in the sea, resembling a jellyfish swimming Dangerous to sea turtles

Wild Wonders of Europe / Carwardine / Aerial view of Humpback whale (Megaptera novaeangliae) swimming through oil slick, Skjalfandi Bay, Northern Iceland, July 2009

Georgette Douwma / Fishing net caught on coral reef. Moluccas, Indonesia.

Constantinos Petrinos / Veined / Marginated octopus {Octopus marginatus} holds crisp bag against back for protection. Lembeh, Sulawesi, Indonesia

Brandon Cole / Killer whales near oil tanker {Orcinus orca} San Juan Islands, Washington, USA, NOT FOR SALE IN USA

Michael Pitts / Marine pollution - dead Laysan albatross (Phoebastria immutabilis) showing plastics in stomach cavity, Midway Atoll Pacific Ocean

Juergen Freund / Container of toilets spilled in to the Red Sea

Jose B. Ruiz / Dead Loggerhead turtle on shore (Caretta caretta) Spain