Pool surface streaks

[kcpnw01]

Hi, I recently purchases a place with a pool. Neither me nor my inspector could figure out the pool material. I am noticing quite a lot of patches and streaks in the pool surface after a recent vacuum. Any idea what these are:
1.https://drive.google.com/file/d/16omUAYw-5zUpRHCJe-8_-7T6cg1SY0l_/view?usp=sharing
2. https://drive.google.com/file/d/19lieMfHuIldjVkVIvvlboug7xutpkAIe/view?usp=sharing

Thanks a lot.