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Sponge Coral is a natural organic substance that is considered to be a relatively new product to be used in jewellery. Related to the more traditional red/pinkish coral, Sponge Coral is not an endangered species and is a sustainable product. Sponge Coral is farmed and is not removed from the Coral Reef causing the environmental damage associated with traditional corals.
Traditional coral is usually used in its natural shape which resembles a twig let where as sponge coral is reconstituted into different shapes. These shapes can either then be used as they are or used to produce a mosaic effect or other patterns. Some items are also inlayed with colored shell in order to produce a decorative effect. The item is then stabilized with a binding solution and polished to give a high luster. Without the stabilizing and polishing the sponge coral would be very brittle and dull in appearance.
All of our Sponge Coral does not come from endangered species and is environmentally friendly. All items have been stabilized and polished in order to turn them in to an attractive piece of jewellery.
Difference Between Sponges and Coral
Superficially, sponges and coral have a lot in common. They both just sit there underwater, filtering food particles, living in large colonies that provide habitats for other animals. Divers know that they come in many beautiful colors. But below the surface, sponges and coral are completely different. Sponges and coral come from different animal phyla, for one. Phyla is the most basic of all animal distinctions, and refers to animals with completely different body plans. 

Sponges are among the most simple of all animals, lacking true tissues, and deterring predators primarily by their lack of nutrition and glass-like shards found in their bodies called spicules. They are covered in little pores lined with cells equipped with flagella, which are both used to circulate water through the sponge and absorb food particles. Sponges are capable of living at any point in the ocean, from just off the shore to 8,500 m (29,000 ft) deep, or more. Sponges are members of phylum Porifera, and their alternate name is "poriferans." 

Corals are cnidarians, related to jellyfish and anemones. More complex than sponges, they have differentiated tissue and a true gut. Corals look like single individuals, but they are in fact huge colonies composed of numerous genetically identical polyps just a few millimeters in diameter. These polyps have stinging tentacles, which is characteristic of cnidarians. Instead of depending on food particles for food, corals get most of their nutrition from symbiotic algae, which give them their color. Corals cannot live as deep as sponges, most being found in the photic zone, where light can reach their algae, but some species are found at depths of 3000 m (9,842 ft). 

Sponges and coral are both members of very early lineages that probably split off from other animals as early as 600 million years ago. For a very long time, it was thought that sponges were the most basal of sponges and coral, but recent genetic studies have indicated that the ancestors of coral, early cnidarians, actually split off from other animals first, and that sponges are likely from a lineage that was secondarily simplified.
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