Mytilus edulis is a species of mollusk commonly known as the blue mussel. Some other synonyms for this species include common mussel, edible mussel, and Atlantic mussel. These terms are often used interchangeably to refer to the same species of bivalve mollusk found throughout the North Atlantic coast. Blue mussels are a popular seafood item and can be found in many dishes from various countries and cultures. In addition to being a food source for humans, they serve as a crucial food source for many marine animals and help to filter pollutants from the water, making them an important part of the coastal ecosystem.