Striped Dogwinkle

Nucella ostrina

Nucella ostrina features a robust shell with three indistinct whorls, typically measuring around 3 cm in length, though it can reach up to 4 cm. The shell is characterized by spirally ridged exteriors, where heavy ridges alternate with more delicate ones. The ridges are often pale, while the furrows between them can display darker colors such as brown, gray, black, orange, or yellow. Inside, the shell reveals a purple hue. This species inhabits the northeastern Pacific Ocean, ranging from the Aleutian Islands in Alaska to Cayucos in California. It is commonly found in the intertidal zone on rocky coasts, particularly near mussel beds and in wave-exposed areas. As a predator, the Striped Dogwinkle primarily feeds on mussels and barnacles, with a preference for the bay mussel. The snail uses its radula to drill into the shells of its prey, injecting digestive enzymes to liquefy the tissues before consuming them. Reproduction occurs through the laying of eggs in clusters known as 'sea oats,' which are attached to rocks in the upper intertidal zone. Each capsule contains around 550 eggs, though many are infertile and consumed by developing juveniles, with only 10 to 20 hatching after a few months without an intermediate larval stage. Encounters with the Striped Dogwinkle during dives can be common. Divers may observe these snails clinging to rocks or near mussel beds, where they can be identified by their distinctive shell features. Conservation status for this species is listed as Not Evaluated.