An aquatic habitat is a type of environment where water is the primary medium for life. This includes oceans, rivers, lakes, and wetlands. Aquatic habitats support a diverse range of organisms, including fish, amphibians, plants, and microorganisms. These ecosystems are crucial for maintaining biodiversity and providing resources like food and oxygen. Aquatic habitats can be classified into two main categories: freshwater and saltwater. Freshwater habitats, such as rivers and lakes, contain low concentrations of salt, while saltwater habitats, like oceans, have higher salt levels. Each type of habitat has unique characteristics that influence the types of species that can thrive there.