The Blunt-end Sea Hare, Eared Sea Hare, Wedge Sea Hare – Dolabella auricularia is a captivating species of sea slug belonging to the family Aplysiidae. These fascinating creatures are characterized by their unique physical traits and intriguing ecological roles within the marine environment.
Description & Characteristics
The Dolabella auricularia is a large sea hare, with individuals often reaching impressive sizes. Its body is typically oval-shaped, and it is distinguished by its prominent, ear-like appendages, which are actually cerata, sensory organs used to detect the environment. The coloration of the sea hare can vary, ranging from shades of brown and gray to olive green. They possess a mantle, a fleshy covering that protects their internal organs, and a well-developed head with two prominent rhinophores, olfactory organs that help them navigate and locate food. The Dolabella auricularia exhibits a unique defense mechanism: it releases a purple ink when threatened, creating a cloud that confuses potential predators and allows the sea hare to escape.
Habitat and Occurrence
The Dolabella auricularia is primarily found in the Subtidal, sublittoral, infralittoral, deep zone of the oceans from the lower limit of the intertidal zone (intertidal) to the shelf edge at about 200 m water depth. neritic. This wide distribution reflects their adaptability to various marine environments. These sea hares are often observed in shallow coastal waters, particularly around rocky shores and seagrass beds. They are known to inhabit areas with abundant algae, their primary food source.
Taxonomy
The species Dolabella auricularia belongs to the Class: Gastropoda, Order: Aplysiida, and Family: Aplysiidae. This classification places it within the larger group of mollusks, specifically the sea slugs.
Feeding
The Dolabella auricularia is a food specialist, primarily feeding on algae, particularly nori-algae. Their diet is crucial for their survival and plays a significant role in regulating the balance of marine ecosystems. They graze on algae, consuming vast quantities and helping to control the growth of these primary producers.
Image References