Is it true that only 5% of the ocean floor has been recorded?

There may be a few deep water sharks and things of that nature left to be found, but the Giant Squid (Architeuthis) is probably the last "monster" that will be discovered in our oceans. read more

-Only 5% of the ocean floor has been mapped as accurately as the Moon.-Radar altimeters on satellites have collected data on sea surface elevation that help produce maps of the sea floor.-There are large areas of the sea floor that remain unmapped by sonar.-The ocean's great depth and opaque character have hindered mapping efforts. read more

So far, less than 0.05% of the ocean floor has been mapped to that highest level of detail by sonar, which is an area roughly equivalent in size to Tasmania. And of course, actually to see the sea floor using cameras or our own eyes means getting even closer, using remotely operated vehicles or manned submersibles. read more