Phylum Ectoprocta is a group of aquatic invertebrates commonly known as bryozoans, or moss animals, due to their moss-like growth patterns. These colonial animals consist of tiny zooids, or individuals, which share a common exoskeleton and specialized feeding structures. In some regions, they are also called polyzoans or "lace corals." Other less common synonyms for Phylum Ectoprocta include "ectoproct," "gymnolaemate bryozoans," and "ectozoans." Despite the various names used to describe these fascinating animals, they are known for their ability to filter-feed on plankton and other small organisms, making them important components of many aquatic ecosystems.