Relating to the choanosome, the internal cavity structure of sponges used for filtering water.
From Greek choane (funnel) + soma (body), where choanosome is the scientific term for a sponge's filtering chamber.
Sponges are basically living filters, and their choanosomal structure is packed with special cells called choanocytes that create tiny water currents—so a single sponge can filter thousands of gallons of water in a day!
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