I’m already seeing questions on various forums “Does this prove ancient people could shapeshift into animals? Doesn’t this prove old pagan magic is real?”
I think the Book of Giants and others spoke of the same thing.
I have read articles on ancient Mesopotamian and Sumerian literature which spoke of the same thing. The apkallu (demigods) of ancient Babel were said to be hybrids and the ancient god/demon Dagon was supposedly a part man/part fish demigod (which, if so, might explain why he didn't die in the Great Flood).