Doesn't look appetising.
The only place on the first map to find moss, contains mushrooms.
Deathwater Cave is a hidden location in Survival 303.
Deathwater cave is a secret cave, sealed off from the rest of the world, located on Mainland of the old map. There are many hiding places in that one cave. It contains moss, mushrooms, and the ominous deathwater. Those who go in are not recommended to eat a thing in the cave. Please also note that a light source is needed to explore the cave.