See UFO coming from Ocean? Ocean life has been around far longer than your monkey ass, Anon. Time for anything to evolve into something sentient and technologically advanced. Also, who's to say that some dinosaur didn't already evolve into an "alien-like" being? They are so far ahead of us, it is nothing for them to keep their existences secret from us. I believe there are no aliens/extraterrestrials, and that whatever they are, are native to this planet and solar system.