Alright, I want a collaborative opinion. I found an easy way out to get the depth, which is using the luminosity of the depth at which they are. Kashimo appears to be in dimly lit water, with the water beneath him being pitch black:
Sources say that light in water becomes dim anywhere between 200-1000 meters in water. With water anywhere beneath 1000 meters not receiving any light at all. My guess is based on the water Kashimo is in being dimly lit, and the water beneath him being pitch-black, he's in the "twilight zone", aka the disphotic zone.
So anywhere between 200-1000 meters underwater. I want an opinion on if I should just use 200 meters, 1000 meters, or a median of 350 meters for the depth of Kashimo? I feel using the median or even the lowest depth is feasible given the pitch-black zone seemed to be right beneath him, however, it only reaches 1000 meters under specific circumstances. Or should I just use 3 ends and see what CGM accept?