What if the biggest part of the UFO mystery is actually under the water?

What if the biggest part of the UFO mystery is actually under the water? My book A History of USOs: Unidentified Submerged Objects Volume 1 covers hundreds of forgotten cases and real patterns. If you haven't, do give it a try! Watch here: https://t.co/lnLV2re95d https://t.co/vTo6fm7H2x