文字稿

It's no ordinary day at the beach. These divers are in Cornwall, southwest England, not for the fun but to pick up rubbish.

An estimated 70% of the plastic which enters the sea sinks, according to the organisation Dive Against Debris. And much of it is not biodegradable.

This is a problem that stretches far beyond the UK. Eight million tonnes of plastic ends up in the world's oceans every year, causing damage to this fragile ecosystem.

词汇

divers 潜水员

sinks 下沉

biodegradable 可生物降解的

stretches 延伸

ecosystem 生态系统