Watch Erik the Viking. Funny movie.
You don't have to go as far as Guam; just ask people living in Norfolk, Virginia if the sea is rising.
Rising to what level? That which it was millions of years ago?
It's been on the news. There's been flooding of streets and coastal areas during routine full moon high tides. The military, which has several large bases in the area, is busy trying to figure out how to protect its facilities. I'm not making that up.
If it's in the news, please show us some examples.
I lived and worked in Key West Florida for three years in the late '60's. At the time, there were a number of streets, down near the Turtle Kraals, the bank we did business with and one of my favorite bars. Every time there was a full moon, the streets would flood a bit. If there was an exceptionally high tide, there would be six or eight inches of water in the streets.
If you recall, cars used to rust out quite a lot at that time. To delay that eventuality, there was a service provided by the filling stations. It would probably be frowned on today and I'm sure it is no longer available. Service stations would have a lift outside. There they would lift your car and spray the used oil from oil changes to the entire undercarriage of your car. I had it done about once a month, usually before the abnormally high tides. It was unnecessary for the Harley I also owned at the time and would have been foolhardy. If I had to ride through salt water, I washed it off the same day.
Over the decades, I have visited many, many times. Guess what? The same flooding, no more, no less. Key West is still there. Not as wonderful as it was in my day, but still there.