The alligator snapping turtle is a big aquatic species having a significantly massive head (as compared to other species of turtles). The carapace (upper shell) has three prominent ridges — 1 together the center line and one on both side. You can find an extra row of scutes (sexy scales) https://whamstrainthclevel63072.blogolize.com/alligator-snapping-turtle-fundamentals-explained-66301070