amastrids

Amastrids are a family of marine snails belonging to the order Caenogastropoda. They are characterized by their coiled shells, which can vary in size and shape depending on the species. These snails are found in marine environments worldwide, inhabiting a range of habitats from shallow coastal waters to the deep sea. Many amastrids are herbivores, feeding on algae and other plant matter, while some are carnivorous, preying on other invertebrates.

The family Amastridae is notable for its high degree of endemism, particularly in the Hawaiian Islands. Many Hawaiian species are found only on a single island or even a specific valley. This isolation has led to significant diversification within the group. Unfortunately, many amastrid species are now endangered or have gone extinct due to habitat loss, introduced predators, and other human-induced factors. Research on amastrids is crucial for understanding evolutionary processes and for conservation efforts aimed at preserving the unique biodiversity of island ecosystems. Their shell morphology and reproductive strategies are areas of particular scientific interest.