there is really only so much rain one can handle, before they get completely fed up, say something along the lines of “enough is enough”, pack their little bags and build up an entire new society underground.
this is pretty much what happened on this mudflood covered planet. and though the residents’ circumstances might look a bit depressing and a bit gloomy and definitely very dark at first sight, i assure you throughout the years they have pretty much adapted and even befriended their living conditions.

there are also some additional advantages of the neverending flooding, which includes a soothing perpetual little melody produced by the water drops hitting the surface of the metal constructs and a strong aroma of petrichor constantly lingering around the tunnels.

2 jellygirls used to live here.  
this is the house the 2 jellygirls used to live in.  
you can take a peek inside the house, where the 2 jellygirls used to live  
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peatland
the soil on these grounds seems to be full of potential for a flourishing agriculture. the residents condense the past into a mushy amalgamation of nurturing and nourishing dirt that eventually fuel the roots of a novel plane of life.
it's a stabilized feedback loop. everyone wants to join and take out their own part of the cycle, even jellygirls. as you can see this is a very appealing circuit.

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