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Marine Bio Ch 1

Harper's Science

Two basic regions of the ocean Pelagic zone and Benthic zone
Pelagic zone water column
Benthic zone seafloor
Two divisions of the pelagic zone Neritic and oceanic
Neritic zone Coastal
Oceanic zone Away from the influence of land
Divisions of pelagic zone in order of increasing depth mesopelagic, bathypelagic, abyssal pelagic
Divisions of the benthic zone supralittoral, intertidal, sublittoral, abyssal, hadal
Supralittoral (splash) high on the shore, rarely covered by water
Intertidal submerged and exposed with the rise and fall of the tide
Sublittoral (subtidal) extends to the continental shelf
Abyssal deepest part of the ocean
Hadal trenches of the ocean and anything below 19,800 ft (6,000 m)
Photic vs aphotic regions Sunlit (where photosynthesizing organisms reside) vs lightless
Pycnocline zone Area of changing density between the surface and deep zone
Communities of the ocean kelp forests, sea-grass meadows, coral reefs, mussel reefs, hydrothermal vents, methane seeps
Out of 33 phyla in Kingdom Animalia, how many are NOT found in the ocean? One phylum
Out of 33 phyla in Kingdom Animalia, how many are found only in the ocean? Fourteen phyla
Created by: farrm