Daphnia are tiny crustaceans, or "water fleas," that are extremely adaptable to their environment. This is due to their ...

This is a mature Daphnia magna imaged under a microscope at 20x magnification. The photo was taken at the end of the 21 day exposure to sunscreen so that we could measure its body length.

Exposing Daphnia to both pollutants together under laboratory conditions caused up to 41 percent more damage to the water fleas than the plastics and forever chemicals did separately.