(sorry for the english)
for this exo, I chose ocean because the others don't inspire me too much so yeah here's my job:
for the first image this is a pic i took from google who represents a calm ocean overnight,this will be the background of the level that I am going to create.
for the second image it's a lamp post that I found on google which is located near the sea, but in the level I'm going to use them in a different way, the shape of the end of the lamp post may remind me of a spike so in the level I will place its "street lamps" in the sea, that is to say that the tail of the street lamps will be hidden in wave-shaped groundspikes (I think it will be lineart) as if it were in the water , there will be obstacles to pass, for the design of its street lamps, I will be inspired by the spikes that we find on the level of the name of deorum by exen/neiro as we can see in the third image
for the last image, we see a small origami boat on the water with a small candle, in the level it can be elements to add in the background or even a small boat that we can follow gradually the level advances for example
well I think it's good, if I did something wrong, if it doesn't reflect the theme or anything keep me informed.