The Orange Doris, scientifically known as Discodoris rosi, is a vibrant and captivating species of sea slug belonging to the family Discodorididae. This nudibranch is easily recognizable for its striking orange coloration, which makes it a standout feature of the marine environment it calls home.
Description & Characteristics
Discodoris rosi, commonly known as the Orange Doris, is a medium-sized nudibranch, with individuals typically reaching a maximum size of 50mm in length. The slug’s most striking feature is its bright orange body, often adorned with a subtle network of white lines or spots. The body is typically oval in shape, with a prominent, rounded mantle that covers the back. The mantle is covered with numerous tubercles (small bumps) that contribute to its unique texture.
Habitat and Occurrence
The Orange Doris is typically found in shallow coastal waters, with its distribution spanning a range of marine zones, from intertidal to subtidal regions. This species is commonly encountered in areas with rocky substrates and abundant sponge growth, often residing in the crevices and overhangs of these habitats.
Taxonomy
Discodoris rosi belongs to the Class: Gastropoda, Order: Nudibranchia, and Family: Discodorididae. This classification highlights its place within the larger group of gastropod mollusks, specifically within the diverse order of Nudibranchia, commonly known as sea slugs. The Discodorididae family encompasses a variety of nudibranch species, with many, like Discodoris rosi, exhibiting striking colors and patterns.
Feeding
Discodoris rosi is a food specialist, feeding almost exclusively on sponges. Its diet is particularly focused on the consumption of various sponge species, which it locates and ingests using its radula, a ribbon-like structure covered in teeth. The sponge’s chemical defenses are absorbed by Discodoris rosi, providing the sea slug with its own protective mechanism.
Image References