RT Report T1 Mesophotic Coral Ecosystems: A lifeboat for coral reefs? A1 United Nations Environment Programme, A2 Baker, Elaine A2 Puglise, Kimberly A2 Harris, Peter A2 Andradi-Brown, Dominic A2 Appeldoorn, Richard A2 Baker, Elaine A2 Ballantine, David A2 Bejarano, Ivonne A2 Bridge, Thomas A2 Colin, Patrick A2 Eyal, Gal A2 Harris, Peter A2 Holstein, Daniel A2 Jones, Rachel A2 Kahng, Samuel A2 Laverick, Jack A2 Loya, Yossi A2 Pochon, Xavier A2 Pomponi, Shirley A2 Puglise, Kimberly A2 Pyle, Richard A2 Reaka, Marjorie A2 Reed, John A2 Rooney, John A2 Ruiz, Héctor A2 Sealover, Nancy A2 Semmler, Robert A2 Schizas, Nikolaos A2 Schmidt, Wilford A2 Sherman, Clark A2 Sinniger, Frederic A2 Slattery, Marc A2 Spalding, Heather A2 Smith, Tyler A2 Villalobos, Shaina K1 ecosystem K1 coral reef K1 coral reef conservation K1 biodiversity K1 fishery K1 climate change K1 sedimentation K1 pollution PB United Nations Environment Programme SN 978-82-7701-150-9 YR 2016 FD 2016 LK https://wedocs.unep.org/handle/20.500.11822/7566 UL https://wedocs.unep.org/handle/20.500.11822/7566 NO Picture a coral reef — most people will probably imagine brightly coloured corals, fish and other animals swimming in well-lit shallow waters. In fact, the coral reefs that live close to the surface of the sea — the ones that we can swim, snorkel, or dive near and see from space — are only a small portion of the complete coral reef ecosystem. Light-dependent corals can live in much deeper water (up to a depth of 150 m in clear waters). The shallow coral reefs from the surface of the sea to 30–40 m below are more like the tip of an iceberg. They are the more visible part of an extensive coral ecosystem that reaches into depths far beyond where most people visit. These intermediate depth reefs, known as mesophotic coral ecosystems, are the subject of this report. DS UN Environment Document Repository RD Sep 19, 2026