Invertebrates

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Across
  1. 4. it lives in fresh water and has a hair-like appearance
  2. 6. it is prickly marine invertebrates
  3. 7. legend has it that these cephalopods attack ships
  4. 10. bivalve,which mainly used for food
  5. 12. they are parasites of intestine
  6. 15. invertebrates that we use in everyday life(more precisely in cleaning)
  7. 16. organ for scraping and grinding food in molluscs.
  8. 17. general group of squids and musseles
Down
  1. 1. it has tremendous number of legs
  2. 2. it has a characteristic cluster of cilia at the end of the body, which is used for nutrition and movement
  3. 3. mollusk whose body is flattened laterally and enclosed in a shell of two flaps
  4. 5. it secretes blue dye that is widely used for food
  5. 8. animal with about forty legs
  6. 9. type of Invertebrates that contain the following classes:turbellaria tapeworms and fluke
  7. 11. in the cartoon, the character that belongs to these invertebrates was named Patrick
  8. 13. clam, which has become a symbol of aristocratic cuisine
  9. 14. these invertebrate is a well-known French delicacy