Water Worms - Crossword

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Across
  1. 2. they make U-shaped burrows
  2. 4. flatworm phylum
  3. 8. burrows in seabed sand or mud
  4. 12. segmented worm and leech phylum
  5. 13. eats dead animals
  6. 14. are mimicked by saltwater flatworms
  7. 15. builds protective cylinder
  8. 16. leech's latching force
Down
  1. 1. freshwater flatworm
  2. 3. divided into ring-like sections
  3. 5. tiny hair on worm segment
  4. 6. flatworm living in water
  5. 7. annelid with no ring-like sections
  6. 9. are located on bristle worm's head
  7. 10. flatworm living in other animal
  8. 11. bloodsucking parasite