New York Times: Huge clumps of strange, pink-stringed jellyfish drifted into the protected bay near my home in Sydney last year. Thousands swarmed under the surface, stinging indiscriminately. I swam through them in a full-body wet suit for several long months with my swimming group, wondering if warmer currents had changed the habitat patterns. Scientists are now talking about a peculiar jellification of the sea, prompted by climate change. We smeared ointments on our faces and packed antihistamines and creams...