Cross-Sculpture Crenella
Crenella decussata
Photo: iNaturalist: (c) smithsonian_marinegeo, some rights reserved (CC BY-NC-SA), uploaded by smithsonian_marinegeo
Overview
The Cross-Sculpture Crenella (Crenella decussata) is a small marine bivalve mollusk characterized by its distinctive shell surface featuring intersecting ridges that create a cross-hatched or decussate pattern. This filter-feeding species typically measures 10-15mm in length and plays an important ecological role in marine benthic communities by processing organic matter and serving as prey for various marine predators.
The Cross-Sculpture Crenella faces significant threats from coastal development and pollution in its shallow marine habitats. Climate change-induced ocean acidification poses additional risks to this small bivalve mollusk, as it can weaken shell formation and disrupt the delicate marine ecosystems it depends upon.
Habitat
This small marine bivalve inhabits shallow coastal waters, typically found attached to hard substrates such as rocks, shells, and artificial structures in intertidal and subtidal zones. It occurs in areas with moderate water flow and is often associated with other sessile marine invertebrates in temperate marine environments.
Other threatened species in Mytilidae
Threatened in Argentina
Frequently asked questions
Why is Cross-Sculpture Crenella classified as Vulnerable?
Where does Cross-Sculpture Crenella live?
What are the main threats to Cross-Sculpture Crenella?
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