Ocean Floor Crossword Puzzle

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Across
  1. 1. a large submarine landform
  2. 7. portion of land that is submerged in shallow water
  3. 8. a long narrow ditch
  4. 9. the direction and movement of a body of water
  5. 10. the community of organisms that live on the sea floor
  6. 11. tiny organisms that drift in water
  7. 12. the periodic rise and fall of sea level
Down
  1. 2. an under water plain in the deep ocean
  2. 3. aquatic animal that swims independently of ocean current
  3. 4. the amount of salt in a body of water
  4. 5. the deepening sea floor out from the shelf
  5. 6. When the water all moves in one direction