What are the challenges of studying coral reefs?

Apr 12, 2014 ... “Cultivated coral” is exactly that. It is not harvested from the wild, but rather from privately/commercially grown stock. When corals get stressed, from things such as heat or pollution, they react by expelling this algae, leaving a white skeleton behind. This is known as 'coral ... Feb 28, 2025 ... What is coral? Did you know that coral is an animal and not a plant? The majority of corals are sessile, attaching themselves to the ocean floor ... Dec 6, 2018 ... Coral reefs are made up of tiny organisms called polyps. The polyps are soft-bodied but secrete limestone skeletons for support. Large, iconic ... What is Zoanthid Coral? Zoanthid corals are soft corals known as colony-forming anemones. These decorative ornamental corals are commonly called 'button polyps' ... Apr 24, 2023 ... Coral species are either hard or soft. Soft corals tend to be feathery in appearance such as sea fans and sea feathers. Hard corals are reef- ... Aug 1, 2020 ... When coral bleaches (appears stark white) the animal has lost its algae and you are seeing through the polyp to the skeleton of the animal. Oct 15, 2024 ... A coral reef is a term used to describe the collective structure of hard corals that help shape a coral reef ecosystem. “A coral reef is a reef ... Jul 5, 2021 ... Thousands of coral species exist around the world and build entire ocean landscapes. Many of the world's coral species are endangered due to ... Coral spot is a fungal disease of woody plants causing branches to die back. Small orange or coral-pink raised spots (pustules) form after the branch dies. The ...