In the twilight depths of the Gulf of Mexico, about as deep down as a football field is long, U.S. Navy divers carefully snip small branches of corals with gloved hands. Their voices crackle through communication systems to the ship above, distorted to high-pitched tones by the helium mixtures they breathe. “These guys, they’re tough, … Continue reading US pioneers restoration of deep water corals damaged by country’s worst oil spill