"Scleronephthya sp. (Soft tree coral)."

Nhobgood Nick Hobgood, CC BY-SA 3.0, via Wikimedia Commons.

#coral

Turbinaria mesenterina, Lettuce Coral at Roma dive site.

Christian Gloor from Wakatobi Dive Resort, Indonesia, CC BY 2.0, via Wikimedia Commons or Flickr: flic.kr/p/2gaBDNJ

#coral

Meandrina meandrites (Maze Coral).

Nhobgood Nick Hobgood, CC BY-SA 3.0, via Wikimedia Commons.

#coral

"This coral formation, found on our house reef was beautifully positioned to create a nice composition backlit by the sun."

Christian Gloor from Wakatobi Dive Resort, Indonesia, CC BY 2.0, via Wikimedia Commons.

#coral

"Corallium rubrum (Linnaeus, 1758), Pseudolithophyllum expansum (Philippi) Marie Lemoine, 1924 - Banyuls-sur-Mer, Sec de Rédéris : August, 1984."

Géry PARENT, CC BY-SA 3.0, via Wikimedia Commons.

#coral

"Coral reef in the Red Sea (South Egypt near Berenice, 2019)."

Mausemarie, CC BY-SA 4.0, via Wikimedia Commons.

#coral

"Soft Corals, Teluk Waitii, Wakatobi, 2018."

q phia, CC BY 2.0 via Flickr: flic.kr/p/2bpEAe8

#coral

"Rough leather coral (Sarcophyton glaucum), Ras Katy, Sharm el-Sheij, Egypt."

Diego Delso, CC BY-SA 4.0, via Wikimedia Commons.

#coral

"Coral reef in the Red Sea (South Egypt near Berenice, 2019)."

Mausemarie, CC BY-SA 4.0, via Wikimedia Commons.

#coral

"Bubble coral (Plerogyra sinuosa). Gulf of Aqaba, Red Sea."

Mr. Mohammed Al Momany, Aqaba, Jordan., Public domain, via Wikimedia Commons or Flickr: flic.kr/p/9f9gjT

#coral

"Scleronephthya sp. (Red soft coral with red polyps)."

Nhobgood Nick Hobgood, CC BY-SA 3.0, via Wikimedia Commons.

#coral

"Polyps or Corals" from "Natural History of the Animal State: Zoological Atlas with Text for School and Home Study," by Józef Bąkowski (1884).

National Library of Poland, Public domain, via Wikimedia Commons. Color and cropping edits.

#coral

"Whip Coral, Blade, Wakatobi, 2018."

q phia, CC BY 2.0, via Wikimedia Commonsor Flickr: flic.kr/p/QED88E

#coral

"Bioluminescence of cactus coral at night."

Tony Shih (ctgintl140), CC BY-ND 2.0 via Flickr: flic.kr/p/eiT1EG

#coral

More Coral Fluorescence. flic.kr/p/2gWfNfg

#coral

Fluorescence du corail

Coral fluorescense Certains coraux, poissons ou crustacés possèdent des protéines fluorescentes qui, éclairées par une lumière bleue ou UV, réémettent de la lumière dans le vert ou le rouge.

^Flickr

"Fluorescent Coral at the Exhibit in the Monterey Bay Aquarium, Monterey County, California, USA."

Daderot, CC0, via Wikimedia Commons.

#coral

"UV shot of coral polyps."

Christian Gloor from Wakatobi Dive Resort, Indonesia, CC BY 2.0, via Wikimedia Commons.

#coral

"Fluorescent coral in Underwater Observatory Marine Park, Eilat."

Tiia Monto, CC BY-SA 3.0, via Wikimedia Commons.

#coral

Corallium rubrum from "Iconographia Zoologica."

Special Collections of the University of Amsterdam, Public domain, via Wikimedia Commons. Color and cropping edits.

#coral

Corail rouge (Corallium rubrum) at Sec des Suisses.

Christophe Quintin, CC BY-NC 2.0 via Flickr: flic.kr/p/nByQxB

#coral

"The Ledge, Soft Corals under a Table Coral; Fiji, April 2018."

q phia, CC BY 2.0, via Wikimedia Commons or Flickr: flic.kr/p/25q6Uwt

#coral

"Soft Corals, Spiral Corner, Wakatobi, 2018."

q phia, CC BY 2.0, via Wikimedia Commons or Flickr: flic.kr/p/2cJ12D9

#coral

"Great Barrier Reef Corals" by W. Saville Kent (1893).

Kent, W. Saville, Public domain, via Wikimedia Commons or Flickr: flic.kr/p/bJvMha

Color and cropping edits.

#coral

"Bubble coral, single cell, and hydroid composition, Lorenzo's Delight, Wakatobi, 2018."

q phia, CC BY 2.0, via Wikimedia Commons.

#coral

"Ancient Coral Reefs" by Heinrich Harder (~1920).

Heinrich Harder (1858-1935), Public domain, via Wikimedia Commons. Color edits.

#coral

"Gersemia antarctica, also known as soft coral, under the sea ice near McMurdo Station, Ross Island."

Rob Robbins, National Science Foundation, Public domain, via Wikimedia Commons.

#coral

"Maldives soft coral (probably Sarcophyton sp.)."

Tchami, CC BY-SA 2.0, via Wikimedia Commons or Flickr: flic.kr/p/gTp3KF

#coral

"Development of Coral" from "The World of the Sea" 2nd ed. by Alfred Frédol (1866).

Biodiversity Heritage Library, Public Domain via Flickr: flic.kr/p/duRa3H

Color edits.

#coral

"Aerial view of the Great Barrier Reef, nearby the Capricorn Group, Queensland, Australia."

LBM1948, CC BY-SA 4.0, via Wikimedia Commons.

#coral

Toadstool Leather Coral.

Alexander Semenov, CC BY-NC-SA 2.0 via Flickr: flic.kr/p/XjJMWj

#coral

"Coral" from "The World of the Sea" 2nd ed. by Alfred Frédol (1866).

Biodiversity Heritage Library, Public Domain via Flickr: flic.kr/p/duR9Wx

#coral

"Coral Reef of the Bahamas" by Herbert B. Judy (1905).

University of Washington, Public domain, via Wikimedia Commons. Color edits.

#coral

"Colpophyllia natans (Boulder Brain Coral) entire colony."

Nhobgood Nick Hobgood, CC BY-SA 3.0, via Wikimedia Commons.

#coral

Plate 2 from "Corals and Coral Islands," 2nd ed. by James Dwight Dana (1890).

archive.org/details/coralscora…

Color and cropping edits.

#coral

Montipora tuberculosa from Réunion.

Philippe Bourjon, CC BY-SA 4.0, via Wikimedia Commons.

#coral

"A pattern of purple octocorals with connecting purple tissue covering a black rock surface. (PhotoId: expn4376)"

NOAA Photo Library, Public domain, via Wikimedia Commons.

#coral

Garden of Coral at Sibelius Seamount (2465 meters).

NOAA Office of Ocean Exploration and Research, Deep-Sea Symphony: Exploring the Musicians Seamounts, Public domain, via Wikimedia Commons.

#coral

Corals at Debussy Seamount.

NOAA Office of Ocean Exploration and Research, Deep-Sea Symphony: Exploring the Musicians Seamounts, Public domain, via Wikimedia Commons.

#coral

Halysites, Silurian Coral from Gotland, Sweden.

Hannes Grobe/AWI, CC BY 4.0, via Wikimedia Commons.

#coral

Fungia fungites from Pulau Layang-Layang, Spratly Islands.

Zarinah Waheed, Francesca Benzoni, Sancia E. T. van der Meij, Tullia Isotta Terraneo, Bert W. Hoeksema, CC BY 4.0, via Wikimedia Commons.

#coral