The United Nations is "declaring war" on the biggest sources of planetary pollution—ocean plastic. On Thursday, the intergovernmental organization's environment program (UNEP) launched its #CleanSeas campaign at the World Ocean Summit hosted by The Economist in Bali, Indonesia.

The unprecedented global initiative urges governments and businesses to take measures to eliminate microplastics from cosmetics and personal care items, ban or tax single-use plastic bags and dramatically reduce other disposable plastic items by 2022. Everyday citizens are also encouraged to join the fight.

Ten countries have already joined the campaign. Indonesia aims to reduce marine litter by 70 percent by 2025. Uruguay will tax plastic bags later this year. Costa Rica will implement better waste management and education strategies to slash single-use plastic.

Estimates say that 8 million tonnes of plastic ending up in our oceans every year, wreaking havoc on aquatic life and ecosystems and costing at least $8 billion in damage to marine ecosystems. If plastic continues to be dumped at its current rate, the oceans will carry more plastic than fish by 2050 and an estimated 99 percent of seabirds will have ingested plastic by then.

There is also a growing presence of tiny plastic particles that shred off of larger items such as plastic bags, bottles and clothing. According to UN News, "as many as 51 trillion microplastic particles—500 times more than stars in our galaxy—litter our seas, seriously threatening marine wildlife."

The campaign's organizers want to banish plastic pollution from entering the world's seas before it's too late.

"It is past time that we tackle the plastic problem that blights our oceans," Erik Solheim, head of UNEP, said. "Plastic pollution is surfing onto Indonesian beaches, settling onto the ocean floor at the North Pole, and rising through the food chain onto our dinner tables. We've stood by too long as the problem has gotten worse. It must stop."

The program is also calling on consumers to shrink their own plastic footprint, from bringing reusable bags to avoiding cosmetics with microbeads.

"I support the Clean Seas campaign because I believe there are better alternatives to single-use disposable plastics, and that we as consumers can encourage innovation and ask businesses to take responsibility for the environmental impact of the products they produce," Jack Johnson, a musician and UN Environment Goodwill Ambassador, said.

"We can all start today by making personal commitments to reduce plastic waste by carrying reusable shoppings bags and water bottles, saying no to straws and choosing products without microbeads and plastic packaging. We can also support the efforts of the emerging youth leaders around the world working for healthy and plastic free oceans," Johnson said.

The singer-songwriter is also promoting a new documentary The Smog of the Sea, which highlights the problem of microplastics. Watch here:

Companies such as DELL are also onboard with the UNEP clean seas campaign. In a tech industry first, the computer company announced this week it will use packaging trays with 25 percent recycled ocean plastic content. The pilot project will keep 16,000 pounds of plastics out of the ocean, the company said.

"DELL is committed to putting technology and expertise to work for a plastic-free ocean," said Piyush Bhargava, vice president for global operations. "Our new supply chain brings us one step closer to UNEP's vision of Clean Seas by proving that recycled ocean plastic can be commercially reused."

Other major announcements are expected at the upcoming The Ocean conference at the UN Headquarters in New York in June, and UN the Environment Assembly in Nairobi in December, according to UNEP.

"The ocean is the lifeblood of our planet, yet we are poisoning it with millions of tonnes of plastic every year," said Peter Thomson, the president of the UN General Assembly. "Be it a tax on plastic bags or a ban on microbeads in cosmetics, each country [can] do their bit to maintain the integrity of life in the Ocean."