Yukihiro Fukuda / Japanese giant salamander (Andrias japonicus) emerging from hole and reaching up to the surface in order to breathe, Hino River, Tottori-ken, Japan, September.

Yukihiro Fukuda / Japanese giant salamander (Andrias japonicus) eating the eggs of another pair, Hino River, Tottori-ken, Japan, September.

Yukihiro Fukuda / Japanese giant salamander (Andrias japonicus) watching a fish swim by, Hino River, Tottori-ken, Japan, September.

Yukihiro Fukuda / Japanese giant salamander (Andrias japonicus) hunting at night, Hino-river, Tottori-ken, Japan, March

John Cancalosi / Hellbender (Cryptobranchus alleganiensis), breathing by moving water across its skin, Pennsylvania, USA, June. Captive.

Yukihiro Fukuda / Male Japanese giant salamanders (Andrias japonicus) eating the eggs of another pair, Hino River, Tottori-ken, Japan, September.

Yukihiro Fukuda / Male Japanese giant salamander (Andrias japonicus) protecting its nest from another intruding male, Hino River, Tottori-ken, Japan, September.

Cyril Ruoso / Japanese giant salamander (Andrias japonicus) nest with eggs, Honshu Japan

Cyril Ruoso / Japanese giant salamander (Andrias japonicus) nest with eggs and adult during spawning, Honshu, Japan, September.

Cyril Ruoso / Japanese giant salamander (Andrias japonicus) nest with eggs and adult during spawning, Honshu, Japan, September.

Cyril Ruoso / Japanese giant salamander (Andrias japonicus) surfacing to breathe, Honshu, Japan, August.

Cyril Ruoso / Japanese giant salamander (Andrias japonicus) Honshu, Japan.