Tryna get back into the drawing groove!
So according to canon, troll teeth seem to generally grow back, but that seems to take some time. What if sea dwellers had several rows of teeth like sharks, so when one tooth breaks, the next one just moves into its place, making sure they always have their full set of chompers? That would be pretty badass imho.
Sadly, our friend here might not be as happy about them.
(Can tumblr user Punpunichu stop bringing sharks into every fucking thing? Absolutely not!)