Coral
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Corals are colonial marine invertebrates within the subphylum Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the impor
Brain coral spawning
Anatomy of a stony coral polyp
Montastraea cavernosa polyps with tentacles extended
Great Barrier Reef
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The Great Barrier Reef is the world's largest coral reef system, composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometres over an area of approximately 344,400 squa
Coral
…94 fathoms). Corals are major contributors to the physical structure of the coral reefs that develop in tropical and subtropical waters, such as the Great Barrier Reef off the coast of Australia. These corals are increasingly at risk of bleaching events where polyps expel the zooxanthellae in response to stress such…
Image of part of the Great Barrier Reef adjacent to Queensland, taken from the International Space Station
Aerial photography
Heron Island, a coral cay in the southern Great Barrier Reef
Aerial view of Arlington Reef