As far as the land scenes go, the depth shines best when Arthur and Mera are traversing the Sahara.
Seeing objects appear to jump out from the screen is cool, but a lot of work also needs to be poured into the environments, i.e. the background.
That said, there are some scenes in Aquaman where there is so much busyness that it leads to some background blurriness, so that knocks down this category’s score down a bit.
In Aquaman’s case, because Atlantis and the other strange underwater locales were constructed from scratch, that allowed more freedom with controlling the focus of the visuals, and as a result, these alien-like environments feel immense in 3D.