I had a good friend send me this link.
I was fascinated by a forest of Cypress trees submerged in about 60 feet of water off the coast of Alabama. The trees still have their bark. The water had to rise very fast, in weeks maybe, for the forest to be submerged and preserved.
"The ancient cypress forest found 60 feet underwater in the Gulf of Mexico, due south of Gulf Shores, Ala., is about 60,000 years old, says a team of scientists who have studied the site.
The forest appears to be a wholly unique relic of our planet’s past, the only known site where a coastal ice age forest this old has been preserved in place, with thousands of trees still rooted in the dirt they were growing millennia ago. It is considered a treasure trove of information, providing new insights into everything from climate in the region to annual rainfall, insect populations, and the types of plants that inhabited the Gulf Coast before humans arrived in the new world. Scientific analysis of the site is ongoing. One of the key things the forest might hint at is a world where the seas rose even more quickly than the worst-case predictions for the near future."
http://www.al.com/news/mobile/index.ssf/2017/06/underwater_forest_discovered_alabama.html