Tritoniopsis
Tritoniopsis is a genus of sea slugs, specifically nudibranchs, in the family Tritoniidae. These colorful, soft-bodied gastropods are carnivorous and are commonly found in intertidal and subtidal zones of the Pacific Ocean, particularly along the west coast of North America.
Common Names
Members of the genus Tritoniopsis are commonly referred to as "tritoniopsid nudibranchs".
Characteristics
Tritoniopsid nudibranchs are characterized by their elongated, slender bodies and prominent cerata, which are finger-like projections that extend from their dorsum. These cerata are often brightly colored and may contain stinging nematocysts, obtained from their prey. The cerata also serve as respiratory organs, absorbing oxygen directly from the water.
Tritoniopsid nudibranchs typically have a pair of rhinophores, sensory organs located on the head, which help them detect food and other stimuli. They also have a pair of oral tentacles, which they use to capture prey.
Environments
Members of the genus Tritoniopsis are primarily found in rocky intertidal and subtidal zones. They are often associated with hydroids, which are their primary food source. These nudibranchs feed on hydroids by using their radula, a toothed structure in their mouth, to scrape off the polyps. The nematocysts, which they obtain from their prey, are stored in their cerata and can be used defensively.