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Bethany Mrs. Neyland - pd.4 5/4/01

Oceans - The Undersea World Bethany Mrs. Neyland - pd.4 5/4/01 Ocean Facts Oceans are interconnected bodies of salt water. They cover 70.8% of the Earth’s surface or 139,782,000 sq. miles.(97% of all water) Floor spreads at a rate of 2 in. per year.

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Bethany Mrs. Neyland - pd.4 5/4/01

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  1. Oceans - The Undersea World Bethany Mrs. Neyland - pd.4 5/4/01

  2. Ocean Facts • Oceans are interconnected bodies of salt water. • They cover 70.8% of the Earth’s surface or 139,782,000 sq. miles.(97% of all water) • Floor spreads at a rate of 2 in. per year. • The shapes of the continents and oceans are changing. • In an ecosystem (like the ocean) there are 4 abiotic (non-living) factors:W,So,Su, and A.

  3. Animals - Moon Jellyfish ( Biotic) • 3’’ high & 16’’ wide • Umbrella shaped and translucent • Have stringy tentacles • Feeding tube-short and expands • M&F- Specific Colors • Characteristics are Adaptations for life

  4. Moon Jellyfish - Habitat • The Moon Jellyfish floats near the surface just off the shore. • The habitats range from the Atlantic to Florida and Mexico plus Alaska to Southern California.

  5. Animals - Lined Seahorse -5’’ and has a vertical compressed body w/ camouflage. Is a Biotic organism. Color is light brown, gray, etc. (speckled w/ white or gold dots) Dorsal Fin is like a fan. Very poor swimmers (H20) Its color, body, etc. are its adaptations.

  6. Lined Seahorse - Habitat The Lined Seahorse is usually around vegetation like eelgrasses and sargassum. The habitats range from Nova Scotia to Argentina plus Bermuda and the Gulf of Mexico.

  7. Animals - Scalloped Hammerhead Shark

  8. More on the Hammerhead NJ-----------S. Brazil 13’ and 9’’

  9. Animals - Pacific Pink Scallop

  10. S Sand 500’ C P O A L L Low Tide Rock

  11. The climate can change from tropical to subtropical. Hurricane season is from June 1 to Nov. 1 GoM = Gulf of Mexico Ocean and weather conditions are good for forming hurricanes in this area. Hurricanes spawned in the Atlantic can move through the gulf also. Golf of Mexico - Climate

  12. GoM - Other Facts • Major habitat for birds that winter along the coasts and islands • A lot of fish are along the continental shelf • Shrimps, shellfish, flounder, red snappers, mullet, oysters, and crabs are good food for humans.

  13. GoM - Human Activity • The population generates sewage and wastes that go into fresh and salt waters. • Drilling brings oil spills that kill organisms. • Erosion has caused the sinking of wetlands.

  14. GoM - Human Effects • Algae and oxygen depletion causes destruction to fish. • Pollution and filling have destroyed almost half of the gulfs man groves and coral reefs.

  15. GoM -Temperatures/Tidal Range • In Feb. it can be 64 degrees F in the N. and 76 degrees F in the S. or the Yucatan coast. • In the summer it can get to 90 degrees F but it usually stays the same. • The tidal range is small (Less than 2 ft.).

  16. The Food Web

  17. Animals in Food Web

  18. Zones - Sealife • Water column of the ocean is an ecosystem called the pelagic zone. Life forms in it are near the surface (a lot of light). • The neritic zone is the part that is above the continental shelves. • Finally, the littoral zone is along the shoreline (exposed to the air in certain times of the day - low tides).

  19. Zones - By Light • Surface waters = sunlight zone • Next level is the twilight zone - (supports at least 850 species of fish) • Deepest region is the dark zone - (no light)

  20. Even with all our knowledge about the ocean, we still have a lot to learn in the future. O S C N A There are a lot of facts, including zones, food web, temperature, effects, animals, and more. E The ocean can be a very interesting ecosystem.

  21. Resources Cited • “eNature Online Field Guides.” www.enature.com. 23 April 2001 • “Gulf of Mexico.” Britannica.com. 23 April 2001 • Weigel, Marlene. Encyclopedia of Biomes. (Vol.2). Farmington Hills: The Gale Group, 2000.

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