Some students should sit on the floor, others should stand behind them. Use a circulating fan set on its highest setting and gently pour pop corn directly in front of the fan so it sails through the air. To prevent choking, discourage students from catching pop corn with their mouth. In the ocean, filter feeders depend on ocean currents to bring food to them. Organisms have have developed several methods to catch microscopic plankton.
Corals have tentacles covered with stinging cnematocysts that harpoon and paralyze their prey.
Crinoids and basket stars have sticky arms with cilia that move food toward their mouth. There are no air borne filter feeders, but many plants and fungi are pollinated and disperse seeds or spores by the wind. Prepared by the Naturalists at the Falls of the Ohio State Park, Clarksville, IN No copyright held. This material may be reproduced.