Image courtesy of the NOAA Office of Ocean Exploration and Research, Windows to the Deep 2019. Download larger version (jpg, 1.8 MB).
Dense fields of Lophelia pertusa, a common reef-building coral, found on the Blake Plateau knolls off the Atlantic coast of Florida during the Windows to the Deep 2019 expedition. The white coloring is healthy — deep-sea corals don’t rely on symbiotic algae, so they can’t bleach. Operations during this expedition took NOAA Ship Okeanos Explorer both inside and outside the Stetson-Miami Terrace Deepwater Coral Habitat Area of Particular Concern, and the team discovered mounds of reef-building corals no one had dreamed of.
From: Unforeseen Abundance of Deep-Sea Coral Habitat.