The Reef That Found Its Voice Again

Marine biologist Tim Gordon pressed his hydrophone beneath the surface off the coast of Indonesia and listened. Where a blast-damaged coral reef had once gone eerily silent, something was happening. After years of painstaking restoration — replanting coral fragments, anchoring new substrate, waiting — the reef was making noise again. Snapping shrimp crackled like campfire embers. Parrotfish crunched on algae.…