Crooked Timber

Happy World Ocean Day

I’m off to do a talk to mark World Ocean Day, so this is posted in haste. The ocean needs advocates. It’s our biggest ecosystem, probably our biggest carbon sink, a major source of oxygen. It regulates temperatures, and drives weather patterns. Hundreds of millions of people are nutritionally dependent on fish. But the ocean is also increasingly central to the global economy, and facing threats like never before.

Climate change – which drives ocean warming and acidification – is the big one. But plastic and nitrogen pollution and destructive fishing practices are also major threats. Fish farming has an enormous environmental footprint, and now a Spanish company has plans to open the world’s first octopus farm. Plans for mining the seabed are close to fruition – or, depending on your view, they may be many years away, exaggerated to boost the share price of a few mining corporations. But one way or another, the ocean is more and more central to the global economy.

Today is a day to reflect on the kind of ocean we want: an industrialised ocean devoid of much of its present life? Or an ocean in recovery, teeming with life once more? After the second world war (when U-boats patrolled the oceans and fishing boats were forced to stay at home in much of the world) scientists were amazed at the recovery the ocean’s ecosystems had made in just a few years. Will they get the chance of recovery again?