In sad yet un-surprising news earlier this month, scientists confirmed that the third-ever global bleaching of coral reefs is under way, and that it could be the biggest coral die-off in history. Those beautiful, multicolor calcium carbonate structures that line our ocean floors don’t just make great scuba-diving photos—they form some of the most diverse ecosystems on Earth, nurture 25% of the world’s marine species, and are essential to populations who rely on coral ecosystems…