The Swamp tank is starting to fill with life. The first fish and the alligator snapping turtles were introduced this week, in advance of the alligators, which will be arriving shortly. Each turtle traveled from Howard Street in its own crate, and they all received physical exams and x-rays before the biologists lowered them into the Swamp. Snapping turtle video clip.Stay tuned for an update after the “big guys” arrive.