Pretty sure this is the “jellyfish” alien at the correct angle. It’s wearing a helmet.

It’s angled – not side-on, like many drawings or interpretations I’ve seen so far. I also believe the dark inverted triangle (which others think is an eye) is possibly part of a helmet that can also be seen in the outline. There’s some appearance of symmetry. It’s piloting a device with dangling limbs – and the angle of the craft also aligns with the above angled image a lot better than side-on.

Absolutely fascinating video.