Mollusca Callista chione is a species of bivalve mollusk commonly known as the "smooth callista" or locally as "almeja fina" in the Comunidad Valenciana. This shellfish is known for its oval-shaped, smooth, and shiny shell, which can display a range of colors from pale beige to reddish-brown, often with intricate patterns.

This species inhabits sandy and muddy substrates in shallow coastal waters. It is commonly found at depths up to 20 meters, although it can sometimes occur deeper. The Callista chione is a filter feeder, sieving plankton and organic matter from the surrounding water using its gills.

• Shell Characteristics: The shell is thick and robust, allowing the mollusk to burrow effectively into the substrate. Its surface is smooth, with very few grooves, which differentiates it from other bivalves.
• Distribution: While prevalent in the Mediterranean Sea, including the coasts of the Comunidad Valenciana, Callista chione can also be found in the Eastern Atlantic, ranging from the British Isles to the Cape Verde Islands.
• Diet and Feeding: As a filter feeder, this mollusk plays a vital role in the marine ecosystem, contributing to water purification by removing suspended particles and plankton.
• Culinary Use: Locally prized for its delicate flavor, the "almeja fina" is a popular choice in seafood dishes throughout the Mediterranean region.

Due to its ecological role and culinary value, efforts are made to ensure the sustainability of Callista chione populations, emphasizing responsible harvesting practices and conservation measures.