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Life in the Ocean Study Pack #10
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Today’s Goals… I can describe the characteristics of ocean organisms
I can distinguish among producers, consumers, and decomposers
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Ocean Life Plankton Nekton Bottom Dwellers
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Plankton Tiny organisms that float in ocean currents Examples:
Eggs of ocean animals Very young fish Larval jelly fish and crabs Tiny adults of some organisms Page 389
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Nekton Animals that can actively swim Often feed on plankton Examples:
Fish Whales Shrimp Turtles Squid Page 390
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Bottom Dwellers Live on the ocean bottom
Can burrow into sediments, walk or swim on bottom, or be attached to seafloor Examples: Anemones Crabs Corals Snails Starfish Some fish
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Ocean Ecosystem An ecosystem is a community of organisms and the nonliving factors that affect them Sunlight, water, nutrients, sediments, gases Every ecosystem has a: Producers Consumers Decomposers
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Producers Base of ecosystem Organisms that can make their own food
Photosynthesis Chemosynthesis
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Consumers Organisms that eat producers
Depend on producers for survival Get energy from the producers
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Decomposers Digest producers and consumers when they die
Example: bacteria
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Food Chains Energy is transferred from producers to consumers to decomposers through food chains
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