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OCEANIC POLLUTION-PLASTICS

Nearly 80% of ocean trash originates from land, swept into waterways and eventually the ocean, leading to severe ecological damage. Ocean gyres, like the Northern Pacific Garbage Patch, trap plastics, creating hazardous environments for marine life. While plastics offer benefits such as durability, resistance to corrosion, and low cost, they pose significant threats to marine ecosystems. This includes entanglement of marine life, mistaken consumption by animals, and the leaching of toxins into ocean waters. Protecting our oceans requires understanding this crucial issue.

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OCEANIC POLLUTION-PLASTICS

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  1. OCEANIC POLLUTION-PLASTICS

  2. “Nearly 80% of ocean trash starts on land…

  3. …and is then swept into the ocean…

  4. …via waterways and storm drains” (Farris and Hart, 1995).

  5. Some comes back to the land…

  6. …but most gets trapped…

  7. …in the middle of the sea…

  8. …where it causes…

  9. great ecological harm.

  10. Winds caused by changes in atmospheric pressure.

  11. Winds affect surface currents of oceans.

  12. Water piles up

  13. And creates a Gyre.

  14. Ocean Gyres

  15. Northern Pacific Garbage Patch

  16. What are the benefits of plastics? Make a list w/ partner!

  17. The Many Benefits of Plastics • Durable & Strong • Resistant to corrosion • Lightweight • Cheap • Flexible • Inert • Easy to mold • Easy to manufacture • Easy to manipulate • Promotes cleanliness

  18. Made of Synthetic Polymers from Oil

  19. Plastic Additives…lots of Chemicals! Fillers Reinforcements Pigments Heat Stabilizers UV Stabilizers Flame Retardants Antistatic Additives Conductive Additives Biocides Curing Agents Plasticizers

  20. Plastics Can Photodegrade

  21. Hydrophobic

  22. Plastic Pellets

  23. 1) Plastic Trash is Ugly

  24. 2) Plastic Trash Entangles Marine Life

  25. 3) Plastic Trash is Mistaken for Food

  26. 4) Plastic Trash is a Base for Invasive Species Dispersal

  27. 5) Plastic Trash Collects Toxins from the Sea and Give Off Toxins to the Sea

  28. 6) Some Plastic Sinks to the Ocean Floor Destroys Habitat

  29. 7) Plastic Trash Endangers Nursery Habitats

  30. 8) Plastic Trash Entangles Marine Equipment

  31. Video “Synthetic Sea”

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