The Ox-heart Clam, Heart Cockle – Glossus humanus is a species of saltwater clam that belongs to the family Glossidae. These clams are notable for their distinctive heart-shaped shells, which are often adorned with intricate patterns and a vibrant reddish-brown color. They are a fascinating and important part of marine ecosystems, contributing to the overall biodiversity and health of the environments they inhabit.
Description & Characteristics
The Glossus humanus clam can reach a maximum size of approximately 4 inches (10 cm) in length. Their shells are typically heart-shaped, with a prominent umbo (hinge) located towards the anterior end. The exterior of the shell often displays a reddish-brown hue with intricate patterns of ridges and lines. The inner surface of the shell is usually white or cream-colored, with a pearly sheen in some specimens.
Habitat and Occurrence
The Ox-heart Clam, Heart Cockle – Glossus humanus is found in a variety of marine environments, but they are most commonly found in the intertidal zone and shallow subtidal areas. This means they live in the region where the ocean meets the land, along the coastline, and in depths of up to 20 meters. They are frequently encountered in areas with sandy or muddy bottoms, as they burrow into these sediments for protection and access to food.
Taxonomy
The species Glossus humanus is scientifically classified within the Class: Bivalvia, Order: Venerida, and Family: Glossidae. Bivalves are a diverse group of mollusks, characterized by their two-part hinged shells, which protect their soft bodies. The Venerida order comprises a large number of marine bivalve species, known for their distinct shell shapes and diverse habitats. Within the Venerida order, the Glossidae family encompasses clams that are typically found in shallow marine environments, including the well-known Glossus humanus.
Feeding
The Ox-heart Clam, Heart Cockle – Glossus humanus is a filter feeder, relying on the currents to bring them food. They primarily consume plankton, microscopic organisms that drift in the water column. They use their gills to filter out these tiny food particles, which are then ingested and digested.
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