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WATER, WATER, EVERYWHERETHE EARTH’S OCEANS AND SEAS JAMEL THOMASEARTH SCIENCE 203
MAJOR BODIES OF WATER
Four oceans: Pacific, Atlantic, Indian, and ArcticPacific is largest and deepest
64,186,300 square miles12,925 feet average depth
Fifth ocean delimited in 2000Southern Ocean north of Antarctica
CORAL REEFS
Form in shallow, warm seasMade of coral polyps’ skeletons
Grow on top of old skeletonsSpend adult lives fixed to same spotCoral diseases increasing dramatically past
10 yearsResponding to onset of bacteria,
fungi, viruses
OCEAN ZONES
Sunlit (down to 650 feet)Sea plants and many animals
Twilight (down to 3,300 feet)Many different fish
Sunless (down to 13,100 feet)Animals feed on dead food from
above