Georgette Douwma / Black-blotched Porcupinefish / Short-spine Porcupinefish (Diodon liturosus) and a Klein's butterflyfish (Chaetodon kleinii) sheltering in barrel sponge. Komodo National Park, Indonesia.

Jeff Rotman / Black Blotched Porcupinefish (Diodon liturosus) inflated swimming in open ocean. Sipadan Islands, South China Sea.

Jeff Rotman / Black blotched pufferfish (Diodon liturosus) inflated with water at night as defensive behaviour, Sipadan Island, Borneo, Malaysia.

GEORGETTE DOUWMA / Black-blotched porcupinefish (Diodon liturosus) at rest in day time, Lembeh Strait, North Sulawesi, Indonesia

Jeff Rotman / Black blotched porcupinefish {Diodon liturosus} deflated sleeping, Red Sea,

Jeff Rotman / Black blotched porcupinefish {Diodon liturosus} inflated, Red Sea, Egypt.

Jeff Rotman / Black blotched porcupinefish {Diodon liturosus} inflated, Red Sea, Egypt.

Jeff Rotman / Black blotched porcupinefish inflated {Diodon liturosus} Palau Is, Micronesia