Open Google maps and take a look at the bathometry. Then go to NOAA and use one of their online GIS maps and take a look at their bathometry maps. You will see massive canyons beyond the continental shelf as if they were extensions of the big rivers dumping into the ocean. These canyons are massive and without a doubt cut by water. We very abruptly came out of the Younger Dryas, it wasn't something that happened over decades or hundreds of years. The biggest thing is that modern science has never accounted for the lost heat and where it came from. Couple that with how the magnetic poles and the earths magnetic field is acting, we might be in store for something in the near future. There are quite a few publications out there that covers some of this but never actually comes out and fully discusses the topic. Science is well, they don't like to think out of the box. I would checkout suspicious observers on youtube.