Interesting Shark Facts

Since it is Shark Week it is appropriate that we look at some interesting stuff about sharks…when will discovery have a Cow Week, they should cows kill more people every year than sharks and are far more vicious and nasty.

Anyway I digress…let’s look at sharks teeth. it seems they are pretty cool…perhaps we could get some genetic modification going to engineering this useful feature.

[S]harks, as a group, do have one evolutionary leg (fin?) up on us humans — one that has nothing to do with the terrifying sharpness of their enormous teeth and everything to do with the evolutionary resilience of those teeth. Sharks, it turns out, can’t get cavities. 

In part, that puts sharks in company with most non-human animals. While creatures who don’t have access to Colgate have dental problems just like we do— among them tartar buildup that can cause gum disease — cavities are a largely human affliction, the result (for the most part) of our affinity for sugar.

What makes sharks unique, however, is that their teeth seem to be coated in fluoride. Yes: coated in fluoride. According to research published last year in the Journal of Structural Biology, at least two species of sharks, makos and tiger sharks, feature teeth whose outer coatings “contained one hundred percent fluoride.” Which is a nice cuspid coup. It’d be, for us, essentially like walking around with a perma-coating of toothpaste on our teeth.

 

 


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  • Harroputza

    So… drinking fluoridated water all day, and they seem to have done OK in the last 420 million years…

  • Sharks don’t have cavities because they constantly replace their teeth, don’t they?

  • Col

    Coconuts kill more people than sharks.
    New Zealand has not stopped fishing for Shark Fins, and I m sure many of you would say it was a waste to cut the fin, better to have a nice Snapper or Blue Cod.
    New Zealand I would hope will stop this practise here in our waters.

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