You're standing by the ocean and you look down into the water, but it's murky, cloudy, and a little bit sour on the nose. The schools of fish you used to see darting past look sickly, weak, and they're riddled with parasites. The coral reefs are overgrown with algae, suffocating.The seaggrass meadows, one of the planet's most powerful carbon sinks, are stripped bare. And the ocean warms. It feels different on your skin, no longer refreshing.Would you want to swim in this ocean, eat fish from this ocean, or ...