Nikolai Levashov About the Human Body

We are created from 7 matters, bodies.
Our life is made of 7 bodies, but there are other creatures that have much more bodies/matter than us and this is why we do not see them with our eyes, with our physical body”

That is why these other beings that we cannot "see" do not need a "diving suit" (let us say like that, this diving suit is our body) like we do.
That is why we cannot see them, but they can see us.
It is exactly the same let's say like the cat can see in the night, she has night vision.
Or the dolphins are using certain frequencies to communicate. We do not see or hear them, but that does not mean they do not exist.