Abstract
Have you ever played in the mud and seen some worms in it? Do you know that there are also worms in the sand or mud of rivers and oceans? Aquatic worms keep rivers and oceans healthy. Like the worms on land, aquatic worms eat the material from dead plants and even other animals. But aquatic worms are also food for other species, like some kinds of fish. As you know, fish are very important: humans and thousands of other animals need to eat fish to survive. However, aquatic worms are disappearing in some regions of the world. I will tell you why this is happening and what I have witnessed in the Mumbai Bay in India.