BBC World Service

May 24, 2021
More than two thirds of our planet is covered by the oceans, but there’s still much to be uncovered about the role that these watery worlds play in climate change.

But recent scientific research claims that bottom trawling, a method of fishing that involves dragging heavy nets across the seafloor, emits about the same amount of carbon annually as aviation. Seabed sediments, which act as huge carbon sinks, are churned up, resulting in carbon dioxide emissions. So should trawling – commonplace around the globe because of its effectiveness – be reduced? And has the climate change impact of bottom trawling been exaggerated?

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The New York Times

March 17, 2021
For the first time, scientists have calculated how much planet-warming carbon dioxide is released into the ocean by bottom trawling, the practice of dragging enormous nets along the ocean floor to catch shrimp, whiting, cod and other fish. The answer: As much as global aviation releases into the air.

While preliminary, that was one of the most surprising findings of a groundbreaking new study published on Wednesday in the journal Nature. The study offers what is essentially a peer-reviewed, interactive road map for how nations can confront the interconnected crises of climate change and wildlife collapse at sea.

It follows similar recent research focused on protecting land, all with a goal of informing a global agreement on biodiversity to be negotiated this autumn in Kunming, China.

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Time Magazine

March 17, 2021
It’s been well established by now that the agricultural systems producing our food contribute at least one fifth of global anthropogenic carbon emissions—and up to a third if waste and transportation are factored in. A troubling new report points to a previously overlooked source: an industrial fishing process practiced by dozens of countries around the world, including the United States, China, and the E.U.

The study, published today in the scientific journal Nature, is the first to calculate the carbon cost of bottom trawling, in which fishing fleets drag immense weighted nets along the ocean floor, scraping up fish, shellfish and crustaceans along with significant portions of their habitats.

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Forbes

October 26, 2020
A new study, published in the Proceedings of the National Academy of Sciences, found that protecting an additional 5% of the ocean can increase future fish catch by 20% or more. Growing up in a fishing community in the Philippines, lead researcher Dr. Reniel Cabral believes that marine protected areas (MPAs) can benefit both conservation and fisheries goals simultaneously. In the past, MPAs have been used as conservation tools, however a focus on fisheries may provide a necessary incentive for many coastal nations to adopt or expand them.

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WEF Blog

July 1, 2020
The most destructive way to obtain food from the ocean is bottom trawling. Especially egregious are the ships called 'supertrawlers', the largest fishing vessels in the world. Their nets, which are large enough to hold a dozen 747 jets, destroy everything in their paths, including 1,000-year-old deep corals.

Surprisingly, bottom trawling is allowed within some marine protected areas (MPAs) in the UK. Even worse, according to a recent Greenpeace investigation, 25 supertrawlers spent almost 3,000 hours fishing – legally – in 39 different MPAs in the UK in 2019.

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