At this point we are all aware that most "reality" shows are about as real as they are intellectually stimulating. Fine, but documentaries? Most would still like to believe that there is a fair amount of truth to what they are saying, but that may not be the case for a new Megalodon shark "documentary".
Animal Planet’s biggest hit is really a big hoax. Did you miss the disclaimer at the end of “Mermaids: The New Evidence” saying the footage was faked and the "scientists" were played by actors?