Jellyshroom Cave
The Purple Shroom Caves (current working title used by the developers) are a special type of Caves that can be found in very low depths (below 180 meters).
The entrance to these caves usually is a hole in the seabed. To get to the cave, the player needs to navigate through multiple levels of stone layers. The caves are characterised by giant Purple Shrooms, Stalagmites and massive groups of Stalactites hanging from the ceiling.
At the moment, the Signal can be used to locate cave entrances.