The body surface of Corvospongilla caunteri is smooth and features a well-developed, sturdy basal membrane. The sponge forms thin and extensive encrustations, and its skeleton is reticulate, although it is poorly formed and lacks spongin. Oscula are inconspicuous and surrounded by shallow, indistinct radiating furrows. The consistency of the sponge is moderately hard but brittle. The sponge exhibits a bright green to pale yellow coloration due to the presence of unicellular algae, Zoochlorellae, residing in its tissues. The megascleres in Corvospongilla caunteri are slightly curved, with both ends pointed, smooth, and stout. Their length and width range from 0.17-0.27 mm and 0.01-0.02 mm, respectively. Microscleres are feebly curved and birotulates with a smooth shaft. The terminal hooks are relatively short and recurved. Their length varies from 0.25-0.35 mm, and the diameter of rotules is 8-10 µm. The spicules of the gemmule, known as gemmoscleres, are slightly curved and slender, typically amphistrongyla. They exhibit a slight curvature and irregular spines, with a length and width range of 43-51 µm and 10-12 µm, respectively. Gemmules are spherical to somewhat depressed and are free in the lower parts of the inner symplasm. They possess a thick pneumatic coat composed of small air spaces. Below the pneumatic layer lies a single layer of gemmoscleres arranged parallel to the gemmule. The foramen is either depressed or slightly raised, forming a rather bent tube.