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Automatische Übersetzung:
Phosphorescence of an Atlantic Giant Cockle (Dinocardium robustum). The Atlantic Giant Cockle, also known as the Great Heart Cockle, is the most common cockle, out of the seven found in the United States. This large and sturdy shell can grow up to 5 inches in length and is creamy white to tan in color, although some have dark, reddish-brown spots. The minerals in the shell phosphoresce slightly after exposure to intense light. Image #1 of 2 in a sequence.