Like, ridiculously clean. Was this glass originally in two parts? Did it break along a seam? Because that’s a seriously unlikely break.
Most likely this area flooded, froze, and then the waters below ice level receded, leaving some remnants behind. Still a real puzzler when you encounter it, though.
The weird thing is that it changed genders. On the left, the duck is female, and on the right, male. Who knew ducks could do that? I thought it was just a fish thing, and maybe some frogs.
And beautifully, too. If there wasn’t a video of it, I’m not sure I would have believed it, either. Why would a walrus need to be able to whistle?