Open Ocean
Published on Nov 19, 2015
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PRESENTATION OUTLINE
OPEN OCEAN
Photo by Wonderlane
The oceanic zone is subdivided into the epipelagic, mesopelagic, and bathypelagic zones.
The epipelagic (euphotic) zone, also called the sunlit zone, receives enough sunlight to support photosynthesis. The temperatures in this zone range anywhere from 40 to −3 °C (104 to 27 °F)(NHPTV).
Photo by Malkav
The mesopelagic (disphotic) zone, where only small amounts of light penetrate, lies below the epipelagic zone. This zone is often referred to at the Twilight Zone due to its scarce amount of light. Temperatures in the mesopelagic zone range from 5 to 4 °C (41 to 39 °F). The pressure is higher here, it can be up to 1,470 pounds per square inch (10,100,000 Pa) and increases with depth (NHPTV).
Photo by somesatellite
90% of the ocean lies in the bathypelagic (aphotic) zone into which no light penetrates. This is also called the midnight zone. Water pressure is very intense and the temperatures are near freezing range 0 to 6 °C (32 to 43 °F)
Photo by VinothChandar
