Living in Water

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Across
  1. 3. transparent bell with tentacles with stinging cells.
  2. 5. a type of claw belonging to a bird of prey.
  3. 6. flatworm
  4. 7. allows organisms to pull oxygen from water.
  5. 9. the process by which cold-blooded organisms thermoregulate.
  6. 11. a gland located on aquatic bird species that provides them with a waterproofing oil for their feathers.
  7. 14. animals that lack a backbone and have a simple nervous system.
  8. 15. legless salamanders
  9. 17. roundworm that is segmented.
  10. 18. allows organisms to blend into its surroundings.
  11. 19. a group of individuals sharing some common characteristics and qualities.
  12. 21. adaptation that provides the organism with a hard layer of protection.
Down
  1. 1. a process of transformation from a juvenile form to an adult form.
  2. 2. body part (mostly limbs and tails) of an organism that can grasp onto things.
  3. 4. a body type that allows an organism to swim faster.
  4. 8. soft body within a hard shell.
  5. 10. the layer of fat found beneath the skin in many cetaceans.
  6. 12. a protein found in the scales and scutes of reptiles making them water resistant.
  7. 13. behavioral traits, structural traits, or physiological traits that increase an organism’s chance of survival.
  8. 14. large teeth that continue to grow throughout a rodent’s life.
  9. 16. this type of skin allows most amphibians to diffuse gases and water through their skin.
  10. 20. provides species with a layer of protection that can pierce flesh.