Arulidae
Arulidae is a family of marine gastropods, commonly known as “arulid snails”. These snails are distinguished by their elongated, slender shells and their unique mode of life, often dwelling in crevices and under rocks. Arulids are primarily found in the Indo-Pacific region, particularly in Australia and surrounding islands. They play a crucial role in the marine ecosystem, contributing to nutrient cycling and acting as food sources for other organisms.
Characteristics
Arulids are characterized by their elongated, slender shells, typically conical or turreted in shape. The shell aperture is narrow and often exhibits a distinct lip. The operculum, a protective plate that covers the opening of the shell, is generally corneous and often has a distinctive shape. The body of the arulid snail is elongated and muscular, adapted for moving through narrow spaces and crevices. Their radula, the tooth-like structure used for feeding, is typically well-developed and adapted for scraping algae and other organic matter.
Environment
Arulids are typically found in intertidal and subtidal environments, often residing in crevices and under rocks. They prefer hard substrates, such as coral reefs and rocky shores. Some species are also known to inhabit seagrass beds and other marine habitats. Arulids are typically found in tropical and subtropical waters, with a strong presence in the Indo-Pacific region.