Somewhere off the shore of Hyde Park, under the same water where people paddleboard and toss out crab lines and pretend not to think about what's touching their ankles, there is a fish the length of a Volkswagen Beetle currently thundering. Not swimming. Not splashing. Thundering. Like, scientifically documented, peer-reviewed, someone-had-to-double-check-it's-not-a-train thundering. This is not a metaphor I'm building toward. This is the actual finding. Researchers jus