Bivalves Listed in Mongolia’s Red Book
This species has a fairly large and thick shell. The outer surface is dark brown, with some areas being almost black. The nacreous (inner) layer is white with a slight pinkish hue. Shell dimensions: length 105–218 mm, height 32–69 mm, thickness 25–40 mm, and weight up to 840–1000 grams.
Water pollution
Water pollution happens when substances, chemicals, and microorganisms enter bodies of water (rivers, lakes, oceans, aquifers, and groundwater) degrading the water quality and making the water unsafe for the users. Not only is this damaging the aquatic ecosystem, but it also pollutes our drinking water, becoming a huge threat to our health.
Bivalve fact
Clams, oysters, and mussels are a part of the bivalves class, a group of invertebrates found in aquatic habitats. They are soft-bodied animals that have two hard outer shells covering their bodies that open and close like a door. They have darker blue or black shells and are usually wedge-shaped or pear-shaped.