Mussels are nature’s filtration systems. They sit at the bottom of rivers collecting dirty water and filtering out all of the bad stuff, eventually giving out clean water for the rest of the wildlife in the river to enjoy! Now, you can make your own mussel and figure out which material best sifts out the bad stuff in dirty water! All you need to do is cut a bottle in half, flip the top upside down, and put it in the bottom half. Then, get a coffee filter, place it in the top half, and start using whatever materials you want to try to filter the water the best!
