When this happens many kinds of marine life suffer, for the dinoflagellates produce a neurotoxin which affects muscle function in susceptible organisms. Humans may also be affected by eating fish or shellfish containing the toxins. Storage polysaccharide as starch. Cellulose plates reinforce cell surface. Flagella beat perpendicular to each other causing spinning motion.
Some species are capable of producing their own light through bioluminescence .
There are about 4,000 known species, but this is probably a very low estimation. Sporozoites are infectious cells of organism and are able to penetrate host cells and tissues. Complex life cycle often involves more than one host. Are parasites of animals. Species in the genus Plasmodium cause malaria in humans and other animals an estimated 300 million people in over 90 countries are infected with malaria, and over 1 million die from it each year.