Eventually, jellyfish might rule the world. What should the art world do about it?

Mother’s Beach, Mornington. I’m eight years old – my son’s age now. This is the last day of my swimming safety course. I’m wearing jeans, boots, t-shirt and hoodie, but I’m still shivering. I jump from the pier into the green-grey froth to tread water for 10 minutes. I’m still fully clothed, but...