there have been alot of mysterious disappearances there that are to this day unexplained. alot of people point to ufos. and still others say its a sea creature of some kind. the best explanation ive heard is that the earths magnetic field isnt nearly as strong there as it is in most of the world which would theoretically mess with magnetic compasses. ive also heard that there is a large build up of methane ice at the bottom of the ocean there and that a large bubble from that could possibly sink a ship. but i think now days with the invention of gps i dont think you would really have much to worry about.