Aquatic habitats are environments where water is the primary medium for life. They can be classified into two main types: freshwater habitats, such as rivers, lakes, and ponds, and marine habitats, which include oceans and seas. These habitats support a diverse range of organisms, including fish, amphibians, and aquatic plants. The characteristics of aquatic habitats vary widely, influencing the types of species that can thrive there. Factors such as water temperature, salinity, and depth play crucial roles in determining the biodiversity of these ecosystems. For example, coral reefs in marine habitats are known for their rich biodiversity, while wetlands serve as important nurseries for many aquatic species.