I'm looking for live and all day long soundscapes of real natural places. I know these things are rare but maybe someone knows sites with this kind material?
What you could do is to find a youtube livestream of a place, that you like and capture the video off of that.
And here is a tutorial of how to capture the video (and more importantly the sound): https://acethinker.com/desktop-recorder/record-youtube-live-stream.html
Here is a site that I found that curates quite a few nature livestreams: https://explore.org/livecams/ (which is actually really cool, so thanks for asking the question, otherwise I wouldn't have find that)
The other more obvious approach is to go to https://splice.com/ pay 10$ for one month and search for 'birds' or 'ocean' and download short loops there. But they are only a few seconds to a few minutes, so that doesn't answer your question.
Hope that helped!