The document discusses the major bodies of water on Earth, including the four oceans (Pacific, Atlantic, Indian, Arctic) as well as the Southern Ocean. It notes that the Pacific Ocean is the largest and deepest. The document also describes coral reefs, how they are formed by coral polyps' skeletons growing on top of old skeletons in warm, shallow seas, and how coral diseases have increased dramatically in the past 10 years. Finally, it outlines the three ocean zones from sunlit to twilight to sunless based on depth.

1. Water, Water, EverywhereThe Earth’s Oceans and SeasJamel ThomasEarth Science 203

2. Major Bodies of Water Four oceans: Pacific, Atlantic, Indian, and Arctic Pacific is largest and deepest 64,186,300 square miles 12,925 feet average depth Fifth ocean delimited in 2000 Southern Ocean north of Antarctica

3. Coral Reefs Form in shallow, warm seas Made of coral polyps’ skeletons Grow on top of old skeletons Spend adult lives fixed to same spot Coral diseases increasing dramatically past 10 years Responding to onset of bacteria, fungi, viruses

4. 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