Ceratosoma
Ceratosoma is a genus of sea slugs, specifically nudibranchs, that are found in the Indo-Pacific region. These marine gastropods belong to the family Chromodorididae and are known for their vibrant and striking coloration. They are relatively large nudibranchs, with some species reaching lengths of over 10 cm. The genus Ceratosoma is characterized by its distinctive features, including cerata (fleshy projections on the back) that are often branched or feathery, and a generally smooth, rounded body.
Common Names
Members of the genus Ceratosoma are commonly known as "Ceratosoma nudibranchs" or simply "Ceratosoma". They are also occasionally referred to as "feather-duster nudibranchs" due to their unique cerata.
Characteristics
Ceratosoma nudibranchs exhibit a remarkable diversity in coloration and patterns. Some species are bright orange, yellow, or red with contrasting black markings, while others are more subdued in color. The cerata, which are used for respiration and defense, are often a prominent feature and can be highly variable in shape and branching. These nudibranchs possess a characteristic rhinophore shape, with club-shaped tips that are often surrounded by a ring of lamellae.
Like other nudibranchs, Ceratosoma species are carnivorous and primarily feed on sponges. They have a radula, a tongue-like structure with rows of teeth, that they use to scrape algae and other organisms from surfaces. Their feeding habits are also believed to influence their coloration, as they may absorb pigments from their prey and incorporate them into their own tissues.
Environment
Ceratosoma nudibranchs are found in tropical and subtropical waters of the Indo-Pacific region. They inhabit a variety of marine environments, including coral reefs, rocky shores, and seagrass beds. These nudibranchs are typically found in shallow water, often at depths of less than 30 meters.
References
For more information on the genus Ceratosoma, please consult the following resources: