I’m sorry to report—especially to any parents or babysitters reading—that “Baby Shark” is evolving before our very eyes. It’s changing shape, getting stronger, faster, and more unstoppable by the minute. Nickelodeon announced on Wednesday that it’s developing a TV show for preschoolers about the small shark and its family, Deadline reports. Sounds about right. Just yesterday, the “Showtime” guys on my train were doing a “Baby Shark” dance routine.