Dwarf Olive – Olivella mutica

, Dwarf Olive - Olivella mutica, Olivella mutica

The Dwarf Olive, scientifically known as Olivella mutica, is a small, strikingly patterned sea snail belonging to the family Olividae. These snails are commonly found in intertidal and shallow subtidal zones, adding a dash of vibrant color to the coastal marine environment.

Description & Characteristics

The Dwarf Olive is characterized by its relatively small size, rarely exceeding 1.5 centimeters in length. Its shell, often described as “olive-shaped,” displays a distinctive, intricate pattern of brown and white markings. The aperture, or opening, of the shell is narrow and elongated, with a prominent siphonal canal extending from the posterior end. The color pattern on the shell can vary slightly between individuals, but the overall shape and structure remain consistent.

Habitat and Occurrence

The Dwarf Olive, Olivella mutica, is a common sight in intertidal and shallow subtidal zones along the coasts of the eastern Pacific Ocean. They are often found nestled among seaweeds and other marine organisms, particularly in areas with sandy or muddy substrates. The Dwarf Olive’s distribution extends from the northern reaches of California, USA, southwards to Baja California, Mexico, making it a prevalent presence in these aquatic ecosystems.

Taxonomy

The Dwarf Olive, Olivella mutica, belongs to the family Olividae, a group of marine snails characterized by their olive-shaped shells and narrow apertures. This family, in turn, falls within the order Neogastropoda, a diverse group known for their predatory feeding habits. The Neogastropoda, along with other gastropod groups, belong to the Class Gastropoda, a vast and varied group of mollusks that includes snails, slugs, and nudibranchs.

Feeding

The Dwarf Olive, Olivella mutica, is a carnivorous predator, specializing in feeding on small invertebrates such as bryozoans (sea mats) and hydrozoa polyps. These invertebrates, often found in the Dwarf Olive’s intertidal and subtidal habitat, provide a rich source of sustenance for this small but efficient marine snail.

Associated Species

Image References

Leave a Comment