Hey, looks like they just found not just a few coins and pots, but an entire Nabatean temple (along with a warehouse district) just off the cost of Italy.

So by your logic, Jordan and/or Saudi Arabia are welcome to annex the surrounding land (which much have belonged to the settlement also), and start kicking out the rootless interlopers currently living the area, any time they want to.

https://www.scientificamerican.com/article/underwater-temple...

https://news.ycombinator.com/item?id=42011078