found: Sheppard, Charles. The biology of coral reefs, 2018.(OCoLC)990846396
found: Sheppard, Charles. Coral reefs : a natural history, 2021.(OCoLC)1263869674
found: Coral reefs, via MarineBio Conservation Society website, Oct. 12, 2022(Coral reefs are a precious resource in the ocean because of their beauty and biodiversity. Coral reefs also provide shelter for a wide variety of marine life; Coral reefs can be found in both shallow and deep waters; Corals can be found throughout the oceans, from deep, cold waters to shallow, tropical waters)
found: Coral reefs, via National Geographic Society website, Oct. 12, 2022(Coral reefs are important ocean habitats; they have been called "the rain forests of the seas"; scientists estimate that 25 percent of all marine species live in and around coral reefs)