Chapter 19

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Across
  1. 1. Produces slime as a defense mechanism.
  2. 4. Direction a shark's caudal tail points.
  3. 9. The fin on the top of a fish’s body.
  4. 11. Purpose for nostrils on a fish.
  5. 14. Direction a dolphin's caudal tail points.
  6. 16. Chamber that controls a fish ascending & descending.
  7. 17. Vampire fish.
  8. 18. What shark teeth act like.
  9. 19. When female fish lay eggs.
  10. 20. Scales of a shark.
Down
  1. 2. Bony plates in fish skin that acts as a protective covering.
  2. 3. When the sperm and eggs meet.
  3. 5. Another general category of all fish
  4. 6. Chemicals released to indicate reproduction or food.
  5. 7. The fin at the rear of a fish, serves as propeller and rudder.
  6. 8. One general category of all fish.
  7. 10. Individual who studies fish.
  8. 12. organ that senses vibrations and pressure changes.
  9. 13. Ray that is venomous.
  10. 15. Exchange of oxygen & CO2 between the body and water.