[markus_zhang]

My dream tells me they are ancient aliens exiled to earth and lived at bottom of ocean for millenials.

They are basically stuck on Earth due to lack of a special fuel that allows them to jump start inter-galactic engine so they can only slip out of ocean once for a while and wander in the Sun system.

They are using us as covers as it is difficult to do a remote scan from their galaxy and pinpoint a small colony under sea and surfaced by a sort of primitive Human society. And it is too costly and agianst the rule to send a fleet to do a close by investigation so their enemies either have not found them yet or decided to drop the issue.

To make us better cover they periodically send dreams of wonders, usually scientific or religious information, to gifted humans during night. Most of the scientific "discoveries" throughout the history were injected by them.