Kinda like when it was decided that the mariana trench would not be used to store radioactive waste.
Two (I think it was 2) people were sent down in a capsule to see if there were signs of live which would indicate that there’s currents down there which would make it not suitable as a place to store radioactive waste.
If they hadn’t seen any sign of life down there (despite there being life forms) who knows what the situation today would be like with a radioactive depot 11km beneath the surface of the ocean (and currents moving it around).
(I moved the post in here cause I think that’s too much offtopic for the meme thread)
As yet we do not know the exact speed or size of these currents, but apparently there must be massive exchanges of water between the surface and the great depths. Thus we have one more reason for prudence in the much-discussed disposal of radioactive waste.