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.

This microscopic animal, known as a water flea or Daphnia pulex, generates genetic variation in a bizarre way, according to a new paper in the journal Proceedings of the National Academy of Sciences.

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.