News reports in Portugal (my country ahah) stated that a huge underwater pyramid has been found between the islands of São Miguel and Terceira in the Azores. According to the reports, the pyramid is perfectly square, and oriented by its cardinal points.
The pyramid was found in an area of the mid-Atlantic and it is believed that the structure has been underwater for about 20,000 years, which is considered to be the time of the last ice age where glaciers were melting.
It is said that the amateur sailor-Diocleciano Silva first discovered the structure, and estimates obtained using GPS digital technology put the height at 60 meters, with a base of 8000 square meters.
Silva discovered the pyramid while fishing on his yacht in the area. He discovered the structure through bathymetric navigation and its tip is submerged around 40 ft.
Here's a video that explains, talked in portuguese but with english subs:
But for security reasons, the exact coordinates of the pyramid have not been released, and it is said that the navy has increased its patrols in the area to prevent possible intruders from exploring the area.
Currently the Portuguese Hydrographic Institute, under the instruction of the Navy, is analyzing data to determine whether or not the structure is man-made.
Experts say in-depth investigations are beginning to point to the possibility of an underwater volcanic hill based on more recent studies. It has also been predicted by analysts that there may be two other pyramids in the area, as images suggest there could be a design link to that of the pyramids built in Egypt.