Marine organisms radiolarians

D Arcy Wentworth Thompson has pointed out, in his book On Growth and Form, that there are microscopic marine organisms called Radiolarians whose skeletons have the same basic shape as soap bubbles trapped in frameworks. The living organisms consist of a mass of protoplasm surrounded by a froth of cells. The silica bearing fluid of the organism accumulates along the intersection of foam-like surfaces and forms a skeleton. 

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