There are two types of aquatic habitat - Freshwater and marine. (1 mark)
1. Freshwater habitat: These habitats consist of the water bodies filled with fresh water, like rivers, lakes, ponds, streams etc.The water has very less amount of salts dissolved in it. (1 mark)
2. Marine habitat: Aquatic habitats where the water has a high content of salt are known as marine habitats. Oceans and seas are examples of marine habitats. (1 mark)