Tubifex Worm

This aquatic angleworm is right at home in mucky water. Sometimes called a sludge worm, it can even live in highly polluted waters. It buries its head in the bottom mud to eat while letting its tail wave in the current. Just like a land worm, an aquatic worm eats mostly dead plants. If a particularly juicy dead animal is nearby it will munch on that too, just as long as it doesn't have to travel too far. This worm breathes through its skin and can live where there is hardly any oxygen. It is both male and female at the same time.