Bertella

Bertella is a genus of sea snails, marine gastropod mollusks in the family Pleurobranchidae. These are sidegill slugs, characterized by a gill located on the right side of their body, between the mantle and the foot.

Characteristics:

Bertella snails are typically small to medium in size and have a flattened, elongated body. They lack an external shell, although some species may have a reduced internal shell. Their coloration varies and often provides camouflage against their surroundings. They are carnivorous and feed on sponges and other marine organisms.

Distribution:

Bertella species are found in tropical and subtropical waters worldwide.

Taxonomy:

The taxonomy of Bertella has undergone revisions over time. Further research may lead to changes in species classification within the genus. It's important to consult updated taxonomic databases for the most current information.