Tethya

Tethya is a genus of marine sponges belonging to the family Tethyidae. These sponges are characterized by their globular or hemispherical shape and a tough, leathery texture. They are typically found attached to hard substrates such as rocks and shells in shallow to moderate depths of tropical and subtropical waters. The surface of Tethya sponges is often covered in small, blunt spines or tubercles, giving them a distinctive appearance. Their color can vary, ranging from orange and yellow to brown and grey.

These sponges are filter feeders, drawing water through their bodies and extracting microscopic food particles. They play a role in their marine ecosystems by filtering water and providing habitat for small invertebrates. Reproduction in Tethya can occur both sexually and asexually. Sexual reproduction involves the release of sperm and eggs into the water column, leading to the development of larvae that eventually settle and metamorphose into new sponges. Asexual reproduction can occur through budding or fragmentation. Some species within the Tethya genus have been studied for their bioactive compounds, which may have potential applications in medicine. The genus Tethya is widespread, with species found in various ocean basins including the Atlantic, Pacific, and Indian Oceans.