The Sea of Death?
A group of youngsters were also filled with inexplicable horror.
As descendants of the apocalypse, of course, they were all aware of the infamous Sea of Death.
It, along with the Stormy Sea, Mist Sea, the Abyssal Sea, and the Arctic Ice Ocean, divided the mainland of this world into separate parts.
Among them, the Sea of Death is most notorious for the terrifying pollution contained in its waters. Whether it's accidental contact, direct consumption of its marine life, or even, exaggeratedly, drinking the seawater directly, all were likely to result in death or cause mutation accidents.
Its name "Sea of Death" came from this, indicating that it brings death.
And the darker the water, the more horrific the pollution.
According to the scholars of the Astronomy Association, who surveyed and ultimately established a standard known as the "Deep Dive Rule."