OK, for those who are curious, here's my little guy trying to swallow a cell phone. Sharks do this you know. They don't discrimate between living and non living objects. They just eat it.
Now from the reverse angle, which we rarely get, unless the shark in question pariticipates:
This one did, but hey, he's been room temperature for over twenty years.
Don't know if you can see it, but the rows of teeth are there.
And after all these years, they remain sharp, I can tell you with confidence.