Mangrove cockle (Concha negra)

Concha negra or mangrove cockle (lat. Anadara tuberculosa) is a species of saltwater clam, an edible bivalve mollusk commonly found on the Pacific coast of the Americas, ranging from Baja California in Mexico to Peru. One of its distinctive features is the red-colored hemolymph (blood), which has led to its popular name in some regions as the "blood cockle".

This coloration is due to a high concentration of hemoglobin, which is atypical for bivalves, as most have clear or slightly milky hemolymph. These clams have been used as a food source by indigenous peoples of the region for centuries.