👉 Monorthochaeta is a type of gastropod mollusk that belongs to the family Monorthochaetidae, commonly known as "monarch mussels". These mollusks are characterized by their large, flattened bodies with a single cell (the shell) and thick, rounded exoskeleton. They are primarily found in the marine environment, often living on or near rocky shores and can be found throughout the world. Monorthochaeta play important ecological roles as primary producers in the