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Corallina officinalis is a calcified red seaweed, a coralline alga commonly found in rock pools on seashores around the world. Corallina officinalis belongs to a large group of calcified seaweeds with more than 564 species that are found on seashores and in seas around the world.Corallina officinalis is a jointed or geniculate coralline alga. Other species of coralline algae are crustose species and look like someone has painted the rocks with pink or mauve paint.Other species of coralline algae can form deposits known as maerl beds. These are extremely important habitats for other organisms. Maerl is also commercially exploitable as a source of lime and trace minerals in the agricultural, horticultural and medical industries.


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