Many states have been plagued with the problem of Pfiesteria, and until recently the cause was unknown. As the climates and ecosystems change some organisms favor the change and others do not. One organism that favors the changes is the dinoflagellates. This organism creates a toxin that causes deep bleeding soars in fish. Then the dinoflagellates eat the fish’s exposed flesh and blood. Pfiesteria also has an effect on human