There's no landmass at the exact coordinates of 0 degrees latitude and 100 degrees longitude. This location falls in the middle of the Gulf of Guinea, off the western coast of Africa.

It's important to note that:

* 0 degrees latitude is the equator, an imaginary line that circles the Earth horizontally.

* 100 degrees longitude is a line running from the North Pole to the South Pole, passing through the Atlantic Ocean.