Bodies of water are large areas filled with water, which can be classified into different types. Common examples include oceans, seas, lakes, rivers, and ponds. These bodies of water play a crucial role in the Earth's ecosystem, providing habitats for various plants and animals. Each type of body of water has unique characteristics. Oceans are vast saltwater bodies that cover about 71% of the Earth's surface, while lakes are smaller, often freshwater areas surrounded by land. Rivers flow continuously, connecting different regions, and ponds are smaller and shallower than lakes, often supporting diverse wildlife.