Recordings of healthy reefs could contribute to efforts to restore coral ecosystems. Australian Great Barrier Reef is experiencing a seventh episode of “mass bleaching” Coral reefs are home to around a quarter of marine life and millions of people depend on them for food and income.
Up to 90% of coral reefs could disappear if global warming reaches 1.5 degrees Celsius above pre-industrial levels. A healthy reef typically has many low-frequency sounds, such as croaks, purrs and grunts. Conversely, a degraded reef, with fewer species, “will be much quieter”