Oceanic Time Machine

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Across
  1. 1. ____ Animals include fish,rays, octopuses,lobsters.
  2. 4. Synonym for global warming.
  3. 6. Class:Aves.
  4. 7. At risk of extinction.
  5. 13. A sea bu-pter-fly.
  6. 14. Ten-legged orange beach-spiders.
  7. 16. Another word for mollusk.
Down
  1. 2. The mineral in shells and coral degraded by a high pH.
  2. 3. A gas that warms the planet.
  3. 5. Acronym for the nature defense association.
  4. 8. Seals are a ____ mammal.
  5. 9. The process of oceans becoming more acidic.
  6. 10. The largest mammals on Earth.
  7. 11. H2O with salt.
  8. 12. A system of interlocking food chains.
  9. 15. A type of shrimp eaten by many marine animals.
  10. 16. An overfished species commonly found in sushi.