Could there be lifeforms in open space? (Details )

Not on a planet, or asteroid, or anything. Certainly not expected to be intelligent.

Just like an intergalactic space whale, or some lifeforms that can survive, and thrive in space.

Maybe a plant?

What would it consume?

How would it propel itself in the vacuum of space?

It would obviously have to be almost indifferent to temperature, and radiation.

I’ve read before that certain fungi can survive in space.