Guineafowl puffer can swallow water & inflate itself when threatened

[Premiumaq]

When threatened, this species has the incredible ability to swallow water and inflate itself to several times its normal size.

http://oceana.org/marine-life/ocean-fishes/guineafowl-puffer?utm_source=Twitter&utm_medium=Social&utm_content=MarineEncyclopedia&utm_campaign=Guineafowl%20Puffer