World Oceans Day, marked every year on 8 June, aims to remind people of the huge role our oceans play in everyday life. The seas are the lungs of our planet, providing most of the oxygen we breathe; and also its heart, the lifeblood of communities around the world.

Our oceans regulate the climate, feed millions of people every year and are home to an incredible array of wildlife.

This year's theme is Healthy Oceans, Healthy Planet, aiming to raise awareness of plastic pollution. Plastic is a serious threat because it degrades very slowly, polluting waterways for a very long time. In addition, plastic pollution impacts the health of aquatic animals because animals, including zooplankton, mistake the microbeads used in beauty products for food. Marine turtles often eat plastic bags, mistaking them for jellyfish.

A World Economic Forum report, released January 2016, estimates the oceans currently hold more than 150 million tons of plastics and warns that they will contain more plastics than fish by 2050. You can help reduce our impact on the oceans by refusing plastic bags and water bottles, and choosing cosmetics that are free of microbeads.

To mark World Oceans Day 2016, IBTimes UK presents photos of marine pollution – plastic and industrial – around the world.

World Oceans Day
A man wades through rubbish floating on the Estero de Vitas estuary in Tondo, Manila, the PhilippinesNoel Celis/AFP
World Oceans Day
Rubbish is strewn along a beach in Anquan village, south China's Hainan provinceAFP
World Oceans Day
A boy searches for fish in the polluted sea backwaters near marina beach in the southern Indian city of ChennaiBabu/Reuters
World Oceans Day
SeaWorld San Diego's senior aquarist Tony Paulicano and veterinary technician Jennifer Rego treat a sick Olive Ridley sea turtle. It was found beached on the Camp Pendleton Marine Corps base north of San Diego, and dehydrated, underweight and hypothermic, and was also found to have ingested plastic from rubbish in the oceanMike Aguilera/SeaWorld San Diego via Getty Images
World Oceans Day
A boy collects recyclable items from polluted waters in front of fishing boats at Karachi harbour, PakistanAkhtar Soomro/Reuters
World Oceans Day
Plastic waste collected in the sea by fishermen is seen in Naquera, eastern SpainPedro Armestre/AFP
World Oceans Day
Tyres and rubbish are strewn across a beach in Veracruz port on the outskirts of Panama CityCarlos Jasso/Reuters
World Oceans Day
A shopping trolley and tyres lie on the sea floor in Marseille harbourBoris Horvat/AFP
World Oceans Day
Plastic and other rubbish litters the shore in northern Jakarta, IndonesiaBay Ismoyo/AFP
World Oceans Day
Plastic bottles and other waste cover a beach after being washed ashore near the port of Abidjan, Ivory CoastIssouf Sanogo/AFP
World Oceans Day
Waste plastics are strewn on Bao beach near Dakar, SenegalSeyllou/AFP
World Oceans Day
Smog covers the skyline of Beirut while empty plastic bottles litter the shore of the Mediterranean off Dbayeh, a suburb of the Lebanese capitalJoseph Eid/AFP
World Oceans Day
A fisherman mends his boat as a fellow fisherman carries a box of fish at a polluted beach in Cilincing, north Jakarta, IndonesiaBeawiharta/Reuters
World Oceans Day
Fishermen prepare to fish amid floating rubbish off the shore of Manila Bay, the PhilippinesErik de Castro/Reuters
World Oceans Day
Fire boat response crews battle the blazing remnants of the offshore oil rig Deepwater Horizon in the Gulf of Mexico off LouisianaUS Coast Guard/Reuters
World Oceans Day
An exhausted oil-covered brown pelican sits in a pool of oil along Queen Bess Island Pelican Rookery in Louisiana after BP's Gulf of Mexico oil spillSean Gardner/Reuters
World Oceans Day
A volunteer tries to reach out to help an oil-soaked bird that washed ashore at Refugio State Beach Campground in Goleta, California, after an oil spillLara Cooper/Reuters
World Oceans Day
Staff and volunteers work to clean oil off a brown pelican after up to 2,500 barrels (105,000 gallons) of oil gushed onto San Refugio State Beach in California and into the PacificLucy Nicholson/Reuters
World Oceans Day
Dead fish float on the surface of the Rodrigo de Freitas lagoon in Rio de Janeiro, BrazilSergio Moraes/Reuters
World Oceans Day
A resident shows a handful of dead shrimps which were washed up on a beach at Coronel in Chile, after water used to cool two thermoelectric plants located next to the beach was reportedly discharged into the seaJose Luis Saavedra/Reuters
World Oceans Day
People swim at an algae-covered public beach in Qingdao, northeast China's Shandong provinceAFP
World Oceans Day
A swimmer wears some of the algae polluting the sea off the coast of Qingdao. ChinaChina Daily/Reuters
World Oceans Day
A fishermen pulls in his fishing net as foamy discharge, caused by pollutants, mixes with surf at a beach in Chennai, IndiaAFP
World Oceans Day
A swimmer stops short of a red algae bloom at Sydney's Clovelly BeachWilliam West/AFP