9 zonation in the ocean

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Ocean Zonation Notes

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9 zonation in the ocean

  1. 1. Zonation in the Ocean sketch this:
  2. 2. Neritic Zone • Oceanic region that runs from the high tide line to less than 200 m (600 feet) (over C. Shelf) • Mnemonic device:“NEAR”-itic is NEAR shore”Neritic Zone
  3. 3. Oceanic Zone • Water beyond the shore & deeper than 200 m (600 ft) • Mnemonic device: “Oceanic is Out to Sea” Oceanic Zone
  4. 4. Photic (AKA Euphotic) Zone • Sunlit region of the sea – usually top 200 m (600 ft) • Plankton can do photosynthesis here
  5. 5. Disphotic Zone • “Twilight” or “Dusk – like” region of the sea – usually about 200 – 1000 m (600 – 3000 feet) • Light enough to see, but not enough for photosynthesis
  6. 6. Aphotic Zone • The “Midnight” or “No Light” region of the ocean – usually below 1000m (3000 feet) • Majority of the ocean
  7. 7. Seafloor Profile With Zones B A C D E ?= Abyssopelagic Mesopelagic Hadal Epipelagic Bathypelagic bonus F? Zone ? Zone ? Zone ? Zone ? Zone Abyssal Plain Rise Trench Slope Shelf

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