diverse underwater ecosystems held together by calcium carbonate structures secreted by corals. Coral reefs are built by colonies of tiny animals found in marine waters that contain few nutrients. Most coral reefs are built from stony corals, which in turn consist of polyps that cluster in groups. The polyps belong to a group of animals known as Cnidaria, which also includes sea anemones and jellyfish.
Montipora is a genus of coral. It looks like underwater flowers or bowls. These types of corals have plates that covers the rocky sea beds.
The coral can be found in the reefs of the northern Indian ocean and the eastern Pacific.
Dinoflagella is a protozoa that lives in symbiosis with the montipora. That protozoa can produce food like plants from sunlight. Dinoflagella shares the food with the coral as a house rent. It also add to the color variations of different montipora species by supplying the green and yellow tint.
“Sharks have everything a scientist dreams of. They’re beautiful - God, how beautiful they are! They’re like an impossibly perfect piece of machinery. They’re as graceful as any bird. They’re as mysterious as any animal on earth. There are more than two hundred and fifty species of shark andeveryoneisdifferentfromeveryotherone.” - Peter Benchley
A kala, or bluespine unicornfish, swims on a reef off Maui, Hawaii. US officials say the first ever assessment of Hawaii’s reef fish shows that 11 of 27 species are experiencing some level of overfishing. Photograph: Kevin Lino/Noaa/AP
It is difficult to imagine corals as animals. They are colorful and immobile. They grows like fungus and sometimes looks like a strange alien plant.
The corals are cnidarians just like jellyfishes. Yes, they are closely related with the jellies !
We know that a jellyfish can sting. Like them some corals can also have mild stings. These species of corals can catch small fishes and sea invertebrates to eat by using their tiny poison spears.
Actually, a coral is a colony of thousands of small polyps. These polyps are joined with each other by exoskeletons.
There are many types of corals. All of these can be grouped into two main categories - hard and soft coral. The hard corals have a hard, rock like exoskeleton made of calcium carbonate. They are less colorful than their soft cousins. Brain coral is a type of hard coral.
The soft coral has a soft exoskeleton. They can move and is quiet flexible.
Feel free to give your opinions or ask anything regarding corals.
Mandarinfish are extremely shy but beautiful. They come out from inside the staghorn coral exactly at sunset to find a partner to mate with, side by side - photo taken at Cabilao, Bohol Island, Philippines