Olivella
Olivella is a genus of small, predatory sea snails, marine gastropod mollusks in the family Olividae. They are commonly known as dwarf olives or olive shells due to their small size and characteristic oval shape.
Characteristics
Olivella species are typically less than 2 cm in length, with a smooth, glossy shell that is often brightly colored and patterned. They are characterized by a narrow aperture, a short siphonal canal, and a prominent columellar fold. The shell is typically white or cream-colored with brown, orange, or red markings. The mantle of the snail is often brightly colored and may be used for camouflage or defense.
Environments
Olivella snails are found in a wide range of marine environments, including sandy beaches, rocky shores, and coral reefs. They are typically found in shallow water, but some species can be found at depths of up to 50 meters. They are active predators, feeding primarily on small invertebrates such as polychaetes, crustaceans, and other mollusks.
Distribution
Olivella species are found in all of the world's oceans, with the highest diversity in tropical and subtropical waters. They are particularly common in the Indo-Pacific region, the Caribbean Sea, and the Mediterranean Sea. The genus is represented by over 100 species, with new species being discovered regularly.
References
WoRMS - World Register of Marine Species
Discover Life
The Nautilus