The Hamashirama is a strange fish that lives in large numbers in the 5th Layer of The Abyss, the Sea of Corpses. Bizarre-looking, equatic swimming creatures, they are the widespread in the floating sea of the fifth layer. They are said to eat sedimentary life. Their appearance outside of the water is vastly different to the form they take when swimming, somewhat resembling an air balloon. Much like all the aquatic creatures of the 5th Layer, they're unaffected by the curse because they have a different set of sensory organs than surface organisms.Their anatomy is quite strange. All their internal organs are packed into their head, and they spray a mucous produced by their organs through spitting from their mouth. This mucous has paralyzing properties, and is used to stop the movement of predators. In some reports, they've been seen using other paralyzed creatures as living shields. Outside of the water they die very quickly and they're not quite so strong, so through fishing they're harmless. Trying to catch one in water is more difficult, and the act of diving into the sea of the 5th layer is synonymous with suicide due to the sensory deprivation of the curse.
They're edible and quite delicious. While their appearance is quite disgusting, it is very sweet and tasty. It's best to eat it raw, much like sushi. Their skin is very tough, so it can be used as a plate instead. The oily organs should be removed however, since they're poisonous.