This location is in the Mediterranean Sea, roughly halfway between the northern coast of Libya and the southern coast of Crete.

Here's why:

* Latitude: 30 degrees North is a line that runs roughly parallel to the equator, about one-third of the distance from the equator to the North Pole.

* Longitude: 30 degrees East is a line that runs from the North Pole to the South Pole, passing through Africa and Europe.

It's important to note that while we can pinpoint the general location, the exact spot on the Earth's surface at 30N 30E is a point in the open sea.