Gillyweed

1. Behind spawn point

2. Beside small cave, ahead of spawn point

3. Beside rune stones

4. Ruins beside Dark Waters entrance, near four fish

5. Beside mermish guard

6. By ruins near glowing tree

7. Near Moaning Myrtle

8. Near alley exit

9. By corals, near four fish by alley entrance

10. By sunken ship near alley entrance

11. By rocks, in front of Dark Waters entrance

12. In front of glowing anemones and jellyfish field

13. Between big corals, mermish statues, and large ruins

14. Middle of the path of the guy being followed by grindylows

15. By ruins, near the end of the path of the guy being followed by grindylows

16. Beside Moaning Myrtle

17. Main swimway, between big corals and Black Lake Underpass entrance

18. Just before the mermish statues

19. Spawning point cave

20. Jellyfish shop(?) cave, behind treasure chest to right of jellyfish

21. Jellyfish shop(?) cave, left of jellyfish