alrighty, so i just fell through the water of the new southeast region of the trench.
At first i had to raise water level on the west side and then went to the east to explore. there i just swam the the farthest west, thinking i could maybe climb sth, but then i just feel to the bottom.
I could then walk back east, up the stairs and be able to swim again and was able to repeat that… just swim westmost, you’ll get what i mean