The term corals is referring to the invertebrate animals or marine invertebrates that is part of the class of Anthozoa and belongs to the family of a large group of fascinating and colourful animals called as Cnidaria. The Cnidarians are usually found in the rock pools and on the beaches, and aside from the corals or coral reefs, some other examples of the Cnidarians are jelly fish and sea anemones. All of the marine invertebrates or invertebrate animals exhibits, manifests, or features a wide variety of sizes, shapes and colours, but their common characteristics that can be distinguished by the people include a simple stomach, stinging tentacles, and a single mouth opening. There are basically two different types of corals or coral reefs, namely the soft coral such as sea feathers, sea fans and sea whips; and the stony or hard coral which can also be called as the reef building corals and there are actually eight hundred species of them. The soft-type of coral is actually different from the hard ones for they do not possess any calcareous skeleton that is rock-like, and its other characteristics include cores that are wood-like for support and fleshy rinds to protect them from other organisms. The primary needs of the corals to grow healthily and to survive include warm water temperature, for it requires such temperature level in order for them to grow; sunlight, for most of them are growing in shallow water and they only depend their oxygen supply to the algae or zooxanthellae; saltwater, for they require a certain balance in the amount of salt to the water; clean waters, for this animals are sensitive to sediments and pollution; and clear water, to let the sunlight through.
There may be a lot of sellers of corals or coral reefs in the world but the best one that sells such invertebrate animals is the Chaos Aquaculture and they are typically selling their products online. The Chaos Aquaculture has their very own warehouse that is being powered by the Echotech Marine and Vertex, and the products they sell or offer to their clients or customers are actually being farmed and grown on it. The said company is actually composed of a group of people that have the same interests, passion and vision when it comes to coral reefs, and they typically make sure that the products that they offer are all healthy. The various products that the Chaos Aquaculture are selling include the scolymia or doughnut corals, acropora, stylophora, montipora, softies or soft corals, frag packs, mushroom corals, aquarium supplies, and Pineapple corals or blastomussa; and since they are online sellers they have their very own website where their customers can order.