Ocean Zones
description
Transcript of Ocean Zones
![Page 1: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/1.jpg)
Ocean Zones
![Page 2: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/2.jpg)
Include Intertidal zone, neritic zone, and the open ocean zone.
Ocean Zones
![Page 3: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/3.jpg)
Highest tide on land is where it begins.
From there the zone stretches out to the point on the continental shelf exposed by the lowest tide.
Intertidal Zone
![Page 4: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/4.jpg)
Extents from the low tide line out to the edge of the continental shelf
Neritic Zone
![Page 5: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/5.jpg)
Beyond the continental shelf lies open ocean zone
Zone is the deepest, darkest part of the ocean
Open Ocean Zone
![Page 6: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/6.jpg)
Most live near the surface
Scientists classify marine organisms according to where they live and how they move
Organisms
![Page 7: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/7.jpg)
Are tiny algae and animals that float in the water and are carried by waves and currents.
Include geometrically shaped diatoms
Plankton
![Page 8: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/8.jpg)
Free swimming animals that can move throughout the water column
Squid, most fishes, and marine mammals such as whales and seals.
Nekton
![Page 9: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/9.jpg)
Are organisms that inhabit the ocean floor.
Crab, sea stars, octopus and lobsters are examples.
Benthos
![Page 10: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/10.jpg)
Organisms that live in the rocky intertidal zone must be able to tolerate the pounding of waves, salinity, and temp
Must also withstand periods of being underwater and exposed to air.
Intertidal zone
![Page 11: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/11.jpg)
An environment along the oceans edge
Is a coastal inlet or bay where fresh water from a river mixes with salty ocean water.
Water is known as brackish.
Estuary
![Page 12: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/12.jpg)
Are habitats found in and around estuaries
Along the US coasts, most wetlands are either mangrove forests or salt marshes.
Coastal Wetlands
![Page 13: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/13.jpg)
Have muddy soil that is rich in nutrients and dominant plant is cordgrass
Tide channels running through the grass break up waves, thus protecting organism from the ocean surf
Salt Marshes
![Page 14: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/14.jpg)
Have arching prop roots that anchor the trees to the land
Roots break up wind and waves protecting organism that live there
Roots also trap sediment so water is rich in nutrients
Mangroves
![Page 15: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/15.jpg)
Extends from low tide out to the edge of the continental shelf
Hallow water over the continental shelf receives sunlight and a steady supply of nutrients washed from the land into the ocean
Neritic Zone
![Page 16: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/16.jpg)
Are coral reefs and kelp forests
Habitats in Neritic Zone
![Page 17: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/17.jpg)
Can from only in shallow tropical ocean waters
Produce a hard material around their soft bodies
When they die hard materials is left behind
Coral Reefs
![Page 18: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/18.jpg)
Grow in cold neritic waters where the ocean has a rocky floor
Kelp Forests
![Page 19: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/19.jpg)
Begins where the nertic zone ends, at the end of the continental shelf
Only a small part of the open ocean receives sunlight
Has fewer nutrients.
Open Ocean
![Page 20: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/20.jpg)
Surface zone is the only part of the open ocean that receives enough sunlight to support algae
Microscopic organisms are the base of food webs in the open ocean
Surface Zone
![Page 21: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/21.jpg)
Dark and cold Many deep sea
fishes produce their own light called bioluminescence.
Deep Ocean
![Page 22: Ocean Zones](https://reader035.fdocuments.in/reader035/viewer/2022062501/56816676550346895dda12d4/html5/thumbnails/22.jpg)
Located in the deep zone
Is an area in which heated ocean water rises through the cracks of ocean floor
Chemical nutrients in the heated water support unique organisms.
Hydrothermal Vent