Scuba divers love to share their favorite tips and tails from dive trips. This column highlights some of those. Science writer and author Juli Berwald was forever changed by a thriving reef in Tela, Honduras.

An unprecedented marine heat wave has triggered a catastrophic mass-bleaching event on the Florida Reef Tract. The Keys’ coral reef ecosystem is suffering intense, quick bleaching and/or dieoff of corals, sponges, anemones and other marine life.