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{{Taxonomy
|image=Calcareous sponge.jpg
|kingdom=Animalia
|phylum=Porifera
|class=Calcarea
}}
'''Calcarea''' is a class of the animal phylum [[Porifera]], consisting of calcareous sponges, characterized by 2-4 spicules made of [[calcium carbonate]] in the form of calcite or aragonite. There are about 400 species of sponges in the Calcarea group, exclusively [[marine]], found throughout the oceans, but mainly in temperate areas.
'''Calcarea''' is a class of the animal phylum [[Porifera]], consisting of calcareous sponges, characterized by 2-4 spicules made of [[calcium carbonate]] in the form of calcite or aragonite. There are about 400 species of sponges in the Calcarea group, exclusively [[marine]], found throughout the oceans, but mainly in temperate areas.