professor where did you even find this

anyways it was really uncanny, with all of those shots from under the surface of the water. And then the mermaid(?) swimming amongst the human structures, and then later in the middle of the ocean… it felt so out of place and yet so natural..

I think it speaks to how humans are somewhat out of place in nature, just as the mermaid was out of place amongst the structures. All of the shots of the quiet stillness in the ocean and in that tundra area sort of spoke to how nature sort of coexists with itself. That mermaids are a sort of extension of nature in a way, because we see the mermaid in the water almost all the time (naturally).
the film kind of implies that mermaids are indeed the link between humans and the ocean because the mermaid interacts with bare, isolated nature and the equally empty human structures. There’s also a bit of curiosity as the mermaid explores the structures, it could be a nod to how humans are curious about the ocean and explore it slowly.