Foraminiferans are aquatic dwellers which have calcium shell. They have perforated chambers. Protoplasm flows out of them and form pseudopodia. They help in locomotion. Pseudopodia are of reticulopodia type. They reproduce by fission and syngamy. They have oozing material known as forminiferan ooze formed by aggregation of calcium shells. This act as an building material and also used in petroleum products.