What if aliens didn’t arrive… they adapted? 👽 Some believe non-human intelligence settled on Earth millions of years ago, when conditions were different, and learned to survive quietly without competing with us. Underground caverns. Deep oceans. Places humans barely explore. Perfect cover. In this theory, UFOs aren’t visitors from deep space — they’re vehicles moving between hidden bases already here. It’s why sightings so often come from oceans, mountains, and remote regions. And the reason th