terra cognita, mare incognitum, mundus supernus incognitus

a couple of days ago, James Cameron took a well-supported and -funded solo trip to the deepest known place in the oceans. that this is known to be the deepest, is part of what Cameron indicated when he said that with satellites we (humans) can look down upon and into all the regions -- however "distant" -- of the earth's surface. what was once terra incognita (actually, a Latin specialist says it were better to write orbis terrarum incognita -- for the entire globe, rather than one area unknown or known) has become terra cognita. Cameron suggests -- though these are not his words -- that the seas are still mare incognitum; to which he added the unknown of space, outer space, the enormous universe, which could likewise be termed: mundus supernus incognitus.

Cameron also did not find monsters ('here be monsters') long and often seen or imagined in the oceans deep, be they mythic or biblical, those of the time we call the age of exploration, or those in fiction, 'scientific' or not.
it is also to be noted, what James said, as he remarked about taking a moment at depth: 'to take it all in' --- this life experience, that is. to get from it as much as possible, also in the realization that he was there doing it.