balloonfish 
noun (plural same or balloonfishes)
A tropical porcupine fish which lives in shallow water and can inflate itself when threatened.
- Diodon holocanthus, family Diodontidae.
- Also called balloonfish, spiny puffers belong to the Tetraodontiformes, an order of fishes known for their strange structures and odd behaviors.
- The conch we saw is safe from the balloonfish because its shell is too thick for the balloonfish to break.
- water salamander
- water sand
- water sapphire
- waterscape
- water scorpion
- water scorpion-grass
- water-screw
- water seal
- water serpent
- Waters, Ethel
- water shaft
- watershed
- water shelf
- water shield
- water ship
- water shoot
- water shrew
- water shrimp
- water shute
- water sickness
- waterside
- watersider
- waterside worker
- water sign
- watersilk