animal crossword

Across

4. theinside
5. devlopebaby
6. outterskin
9. coldblooded
12. containamnion
14. havebackbone
15. arrangedorgans
18. watervessulesinthebody

Down

1. suchassponges
2. reproductiveorgans
3. eqaulsides
7. loosinghair
8. halves
10. nobackbone
11. connectivetissue
13. umbrellabody
16. bottomofbodyofwater
17. extratissue
19. helpsswimming