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“What are some characteristics of marine ecosystems or biomes?” http://www.edc.uri.edu/lme/clickable-map.htm Marine Ecosystems • • • • Cover ¾ the Earth’s surface Contain 97% of Earth’s water (Salt Water) Have the largest animals Abiotic factors shape the biomes Ex. Temp. Intertidal Zone • Area where ocean meets land. • Has a tide Ex. Beach, rocky shores, mud flats http://www.pbs.org/wnet/nature/edgeofsea/tidepool.html http://hmsc.oregonstate.edu/projects/rocky/tidezones.html Neritic Zone • Area at the edge of the continental shelf. (200 m) •Lots of sun so lots of life (coral) •Phytoplantkon-micro. Organisms that make their own food. •Zooplantkton- feed on phytoplankton. http://people.whitman.edu/~yancey/midwater.html Oceanic Zone • Deep water Ex. Whales, squid, bony fish • Little or no light • Most organisms get energy by consuming organic material that falls from the surface. Benthic Zone • Deep sea floor • Get food by filtering or by heat • Ex. Tube worms, Bacteria, sea urchins Examples of Marine Ecosystems Sargasso Sea Intertidal Areas Coral Reef Marine Eco. Examples Estuaries Polar Ice Coral Reefs •Live in mutualism relationship with single-celled algae (photosynthesis provides food). The Sargasso Sea • Is in the middle of the Atlantic Ocean • Sargasso is a type of floating raft algae Polar Ice • In the Artic Ocean and around Antarctica • Has nutrients from landmasses to feed plankton which supports the ecosystem. Estuaries • Area where fresh water flows into the ocean from streams and rivers. • The salt levels vary. Intertidal Areas • Organisms are able to “cement” themselves to rock. Ex. Worms, clams, crabs, star fish, plankton So, what energy factor does each of the marine biomes have common?