Another, albeit more recent and better done, fake?
Surely if we were to look for some unknown primate/ape-like creature, Yukon (Canada) and Alaska would be more likely sightings given the wilderness. Either that or the Andes or the Himalayas.
I think that there are definitely animals, primates included, that are yet to be discovered in isolated/wilderness areas on earth, but I don't think a Bigfoot creature is likely. Maybe some kind of new bear species though?
Now when it comes to what the oceans are hiding, that's another discussion altogether, we have just started discovering/researching some of the deepest parts of the ocean and the animals/organism that inhabit it.