“We can now go to the Arctic. Just ten years ago I stood on the ice at the North Pole. An ice-free Arctic Ocean may happen in this century. That’s bad news for the polar bears. That’s bad news for us too. Excess carbon dioxide is not only driving global warming, it’s also changing ocean chemistry, making the sea more acidic. That’s bad news for coral reefs and oxygen-producing plankton. Also it’s bad news for us. We’re putting hundreds of millions of tons of plastic and other trash into the sea. Millions of tons of discarded fishing nets, gear that continues to kill. We’re clogging the ocean, poisoning the planet’s circulatory system, and we’re taking out hundreds of millions of tons of wildlife, all carbon-based units. Barbarically, we’re killing sharks for shark fin soup, undermining food chains that shape planetary chemistry and drive the carbon cycle, the nitrogen cycle, the oxygen cycle, the water cycle — our life support system.”
Sylvia Earle, in a TED Talk, “My wish: Protect our oceans,” February 2009