Gastropods

Nemesignis banyulensis – Lady Godiva Sea Slug

Description

Nemesignis banyulensis, also known as the Lady Godiva sea slug, is a striking nudibranch belonging to the Myrrhinidae family. It is known for its orange-red coloration and reaches a notable size. The species name "banyulensis" refers to the oceanographic station of Banyuls-sur-Mer (France), where the species was first described.

Diet

Nemesignis banyulensis feeds on polyps of the genus Eudendrium, polychaete worms, and even other nudibranchs such as Edmundsella pedata, Flabellina affinis, Cratena peregrina, or Facelina rubrovittata. It has a predatory lifestyle, making it a carnivore.

Lifestyle

• Habitat: It lives in the subtidal zone, the shallow shelf region permanently covered by water (up to about 200 meters deep).
• Reproduction: During mating, the cerata (dorsal appendages) of the animals move vigorously. The spawn consists of a strongly serrated tip with white eggs.
• Behavior: Nemesignis banyulensis is an active hunter and exhibits a predatory lifestyle.

Fun Facts

• Scientific Classification: Originally described as Dondice banyulensis, the genus was later renamed Nemesignis to avoid naming conflicts. The name combines the Greek word “Nemesis” (goddess of retributive justice) and the Latin word “Ignis” (fire), referring to the fiery red color of the species.
• Distribution: It is found in the Mediterranean Sea and the Northeast Atlantic.