A team of highly trained scientific divers explored Pacific and western Atlantic reefs to test a widely held hypothesis that climate-stressed life from shallow reefs can take refuge at mesophotic depths (100-500 feet beneath the ocean's surface). The results are clear: deep and shallow reefs are different systems with their own species, and deep reefs are just as threatened by climate impacts, storms, and pollution.

Source: Deep-diving scientists say shallow reefs can't rely on twilight zone systems for recovery