Common name: Sea Squirts

Ascidiacea, commonly known as sea squirts, tunicates, or ascidians, are a class of marine invertebrates found in oceans around the world. They are characterized by a tough outer tunic and a sedentary lifestyle, often attaching themselves to rocks or coral. In the reef aquarium, they can be both beneficial and problematic. Some species are known to filter water, removing suspended particles and improving water quality. However, they can also grow rapidly and outcompete corals for space. Identifying the species and monitoring their growth is crucial for maintaining a balanced aquarium ecosystem.

1. 
   Common name: Crater Sea Squirt

   Scientific name: Aplidium crateriferum
2. Common name: Tabasco Tunicate

   Scientific name: Aplidium tabascum
3. 
   Common name: dirty sea-squirt

   Scientific name: Ascidiella aspersa
4. 
   Common name: Robust sea squirt

   Scientific name: Atriolum robustum
5. Common name: Leach's compound ascidian

   Scientific name: Botryllus leachii
6. 
   Common name: Bumblebee Snail

   Scientific name: Brevicollus tuberatus
7. 
   Common name: Bluebell Tunicate

   Scientific name: Clavelina detorta
8. 
   Common name: Light bulb tunicate

   Scientific name: Clavelina lepadiformis
9. 
   Common name: bluebell tunicate

   Scientific name: Clavelina moluccensis
10. 
    Common name: Painted Tunicate

    Scientific name: Clavelina picta
11. 
    Common name: Stalked ascidian

    Scientific name: Clavelina robusta
12. 
    Common name: Bluebell Tunicate

    Scientific name: Clavelina viola
13. Common name: Didemnum conchyliatum

    Scientific name: Didemnum conchyliatum
14. Common name: Didemnum cuculliferum

    Scientific name: Didemnum cuculliferum
15. 
    Common name: Urn Ascidian

    Scientific name: Didemnum molle
16. Common name: Distaplia corolla

    Scientific name: Distaplia corolla
17. 
    Common name: Green Barrel Sea Squirt

    Scientific name: Eudistoma gilboviride
18. Common name: Blue Velvet Sea Squirt

    Scientific name: Eudistoma reginum
19. 
    Common name: Orange Sea Squirt

    Scientific name: Eusynstyela latericius
20. Common name: Giant pink ascidian

    Scientific name: Herdmania momus
21. 
    Common name: Reticulated Leatherjacket

    Scientific name: Leptoclinides reticulatus
22. 
    Common name: Blue Encrusting Sponge

    Scientific name: Lissoclinum bistratum
23. 
    Common name: Blue Tunicate

    Scientific name: Lissoclinum patella
24. Common name: Blue Velvet Sea Squirt

    Scientific name: Lissoclinum reginum
25. 
    Common name: Lollipop Tunicate

    Scientific name: Nephtheis fascicularis
26. 
    Common name: Perophora modificata

    Scientific name: Perophora modificata
27. Common name: Incandescent Sea Squirt

    Scientific name: Phallusia julinea
28. 
    Common name: golden sea squirt

    Scientific name: Polycarpa aurata
29. 
    Common name: Giant Tunicate

    Scientific name: Polycarpa contecta
30. Common name: Polycarpa papillata

    Scientific name: Polycarpa papillata
31. 
    Common name: Inkspot Sea Squirt

    Scientific name: Polycarpa pigmentata
32. 
    Common name: Pycnoclavella diminuta

    Scientific name: Pycnoclavella diminuta
33. 
    Common name: Yellow sea squirts

    Scientific name: Pycnoclavella flava
34. 
    Common name: Blue Club Tunicate

    Scientific name: Rhopalaea crassa
35. Common name: Green-ringed Ascidian

    Scientific name: Sigillina signifera
36. Common name: Blue Velvet Sea Squirt

    Scientific name: Trididemnum pigmentatum
37. 
    Common name: Colonial Tunicate

    Scientific name: Trididemnum solidum