About Luisella babai (Schmekel, 1972)
Luisella babai can grow to a length of about 30–53 millimetres, or 1.2–2.1 inches. Its body is typically white to light blue, elongated, and translucent, with a white edge and a long, sharply pointed tail. Its cerata are arranged in groups of 3 to 9, and match the body's base color, with yellow-orange rings on their terminal sections. The two long tentacles on its anterior end share the same color as the rest of the body. The two rhinophores, located on the upper part of the body, also match the body color, and have a yellow terminal tip. Because the body is translucent, the digestive system and liver can be seen through the body wall. This species looks quite similar to Samla bicolor, but S. bicolor is only found in the Indo-Pacific region. This species was first described from the Mediterranean Sea, where it is a fairly common species. It is also found in the Adriatic Sea, and has been reported from the Atlantic coasts of Spain, Portugal, and Senegal. It lives on rocky bottoms at depths between 5 and 50 meters.
