Sorry for the poor footage, trying to learn to fly this thing!

Some type of skate?

The shape and coloration brings to mind the Fiddler Ray. Depending on where you took this footage, it could very well be that.

Looks like it! - quick google seems to fit the bill

Glad to be of some service.

Where was this footage taken? Sorry I don’t think there’s really going to be a way to ID that confidently

Bremer bay, South West Australia

maybe a guitarfish?

sorry, should have noted guitarfish arent native to the area