Problem
Threatened species of Scleractinia
Other Names:
Threatened species of MadreporariaThreatened species of Hard corals
Threatened species of Stony corals
Threatened species of True corals
Nature:
Corals are invertebrates that are in symbiosis with an algae or a dinoflagellate. Coral bleaching occurs when the corals lose their zooxanthellae (the algae or dinoflagellate is what causes the beautiful colours of coral). The result of losing its algae causes the coral to bleach (become completely white). When corals are stressed by changes in conditions such as temperature, light, or nutrients, they expel the symbiotic algae living in their tissues, causing them to turn completely white.
Background:
Scleractinian corals diversified during the Mesozoic and Caenozoic eras and are at the height of their development today.
Broader Problems:
Threatened species of Zoantharia Subject(s):
Resources → Precious stonesSocietal Problems → Endangered species
Related UN Sustainable Development Goals:
Problem Type:
E: Emanations of other problems Date of last update
06.05.2019 – 16:33 CEST