Midway through Discovery’s annual Shark Week, and they finally serve up a title worthy of singular mention. It’s a fun name for a nature program, even if it doesn’t make much sense. (What’s next? Sharkmageddon?) This new one-hour Sharkpocalypse special, by the way, is preceded at 8 p.m. ET by Spawn of Jaws: Sharktweeto, and followed at 10 p.m. ET by Alien Sharks of the Deep.