Take a look at the picture to the right. This was a picture taken of a dead creature that washed up on the coast of California. The thing had a neck 20 feet long and four flippers. Several people were eyewitnesses.
Bases on the Moon built by Non-Earthlings? NASA has clear real photos of the alien bases on the moon. In some of these Moon photos, if you observe closely, you can see structural buildings.The Moon is definitely a permanent station.