Two new additions to the newly titled 'Topographic Anomalies' section have been added to the SD site. A series of mound like features have been documented off the coast of Puerto Rico and can be seen here: Puerto Rico Parallel Topographic Mound Features
The features can be seen in parallel line formations that are spaced equally all around the island of Puerto Rico. The topographic images were taken from the NGDC 3 Arc-Second Coastal Relief Model available online. Features like these are not abundant within the coastal relief data and it's uncertain if the features are data glitches or actual anomalous landforms.
Another image found here shows the mound anomalies disappearing then reappearing suggesting the anomalies are actually on the sea floor. The red arrows in the image are spaced equally and the equal distant spacing seems to be very precise.
Similar features exist within the image data around the island of Bimini and are viewable in the image study: Bimini Topographic Mound Features
The 'blip' features are approximately 600-800 feet in diameter and exist to the North, SE, and South of the island of Bimini. The Southernmost image available here reveals the 'blip' features existing in 3 parallel rows. The 'blip' features also make up a larger grid feature between Florida and the Bahama Bank seen here and marked by the red arrows to the left of the topographic image. The whole area appears to be ordered and contains the 'blip' features arranged in a grid formation.
Many comments have been made concerning the area between Bimini and Florida containing anything from underwater domes cited by pilots, to lost pyramids and ancient underwater cities. If the topographic data is accurate there is a possibility the 'blip' features may have been created by ancient man. The explanations for the 'blips' include oil survey explosions, military bomb sites, ancient pyramids, ancient agricultural signs and data noise.