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10
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Describe the different types of ocean organisms
b
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) Plankton - organisms that are microscopic andcan't swim but float
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Phytoplankton - tiny plants that make food by photosynthesis, lives in the
photic zone and are responsible for about a half of the total primary productivity
d
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2
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(large algae are called seaweeds)
3
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) Fish - they are vertebrates which means they have a backbone
Features Of Fish:
•they have fins which allows them to move and steer
•scales for protection
•gills for breathin and extracting oxygen from water
•a swim bladder that allows them to rise and sink to dif
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) Reptiles - live in warm water
Ex: Sea turtles, Sea snakes, Saltwater crocodiles
6
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) Marine Mammals - they are endothermic(warm-blooded) vertebratethat give birth to
live
young, are fed w/ milk and have hair, ears & a jaw bone
w/ teeth
Their traits:
• for swimming: streamlines bodies, slippery skin/ hair, fins
•for warmth: fur, fat,high metabolic rate, small surface area to volume, specialized
blood system
•for salinity: kidneys that excrete salt, impervious skin
8
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) Reefs - calcium carbonate that are deposited by corals and other animals
10
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) Hydothermal Vents - where bacteria that uses chemosynthesis(making of organic
compounds) are located
Ex: Shrimp, Giant tube worms, Clams