Deep Blue Sea

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Across
  1. 3. — The scientific name for the "Midnight Zone" (1,000–4,000m).
  2. 4. — The effect caused by Earth's rotation that makes currents curve.
  3. 5. — Process where one tectonic plate slides underneath another.
  4. 8. — A deep, steep-sided canyon in the ocean floor (e.g., Mariana).
  5. 9. — A large system of rotating ocean currents.
  6. 10. — Microscopic plant-like drifters that produce most of the ocean's oxygen.
Down
  1. 1. — Light produced by a chemical reaction within a living organism.
  2. 2. — The measure of the amount of dissolved salts in seawater.
  3. 6. — The type of tectonic boundary found at a Mid-Ocean Ridge (moving apart).
  4. 7. — The type of tide with the lowest variation, occurring during quarter moons.