Fred Bavendam / Guineafowl Pufferfish (Arothron meleagris) in its golden color phase puffed up off of Tower Island, Galapagos Islands, Ecuador

Jeff Rotman / Pufferfish sleeps in Gorgonia coral at night. Borneo, Sipadan Island.

Georgette Douwma / Map pufferfish {Arothron mappa} feeding Andaman sea, Thailand

Georgette Douwma / Map pufferfish {Arothron mappa} feeding Andaman sea, Thailand

Georgette Douwma / Black spotted pufferfish {Arothron nigropunctatus} Andaman sea, Thailand

Jeff Rotman / Guineafowl pufferfish inflated at night {Arothron meleagris} Galapagos, Pacific

Pascal Kobeh / Giant pufferfish (Arothron stellatus) and Bigeye snapper (Lutjanus lutjanus) school amongst wreck of Mitsio. Nosy Be, Madagascar.

Pascal Kobeh / Mappa pufferfish (Arothron mappa) in front of Giant seafans / gorgonians (Annella mollis). Indian Ocean, Madagascar.

Pascal Kobeh / California sea lion (Zalophus californianus) playing with Starry pufferfish (Arothron meleagris), fish puffed up in defence. Baja California, Mexico.

Pascal Kobeh / California sea lion (Zalophus californianus) playing with Starry pufferfish (Arothron meleagris), fish puffed up in defence. Baja California, Mexico.

Tony Wu / Brown-lined puffer fish (Canthigaster rivulata) pair spawning. Shizuoka Prefecture, Honshu, Japan. June.

Magnus Lundgren / Wild Wonders of China / Valentin's toby (Canthigaster valentini), Xiaoliuqiu Island, Taiwan