Discovery Channel has long since gone the way of the History Channel, and now bears only coincidental moments of truth.
All they care about are ratings, and if lying to the public means ratings, well, obviously, Discovery is all over that.
As a scientist quoted in any of the current Shark Week "dramas" (they don't even rate the "docudrama" label), I'd sue Discovery for misrepresentation and libel. They quoted out of context and stitched together several scientist's different takes (not to mention failing to inform them about the subject being talked about, rather lying to them about the nature of the interview). As a consequence, the "scientist" never said any of the things they were purported to say.
Don't watch Shark Week. Don't watch Discovery/History/TLC or anything like that any more. heck, even NatGeo is bad. It's a shame.