Melibe arianeae is a species of sea slug, a nudibranch, belonging to the family Tethydidae. It is a fascinating creature that exhibits a unique combination of features and adaptations.
Description & Characteristics
Melibe arianeae is a relatively large nudibranch, reaching a maximum size of about 80 mm. It has a distinctive elongated body, often described as resembling a “worm-like” form. The body is translucent and can exhibit a range of colors, including white, yellow, and orange. It has a large, prominent oral veil that is fringed with numerous small tentacles. This oral veil plays a crucial role in its feeding strategy, as it is used to capture prey.
Habitat and Occurrence
Melibe arianeae is a marine species found in a variety of habitats, primarily in shallow waters. It is a common inhabitant of coastal areas and rocky reefs, often occurring in the intertidal zone. This species is particularly well-adapted to environments with strong currents. Melibe arianeae is widely distributed in the eastern Pacific Ocean, from Alaska to California. It is typically found in depths ranging from the surface to about 50 meters.
Taxonomy
Melibe arianeae belongs to the class Gastropoda, order Nudibranchia, and family Tethydidae. This classification reflects the evolutionary relationships and shared characteristics with other gastropods, including the absence of a shell in adulthood, and the presence of specialized feeding structures.
Feeding
Melibe arianeae is a carnivorous species, primarily feeding on zooplankton, small crustaceans, and other invertebrates. It uses its large oral veil, which is covered in numerous small tentacles, to capture prey. These tentacles create a net-like structure that traps passing organisms. The tentacles are then drawn towards the mouth, and the prey is consumed. This unique feeding mechanism has made Melibe arianeae an intriguing subject of research in marine biology.
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