Why do some shells have perfect holes in them? 

Ever found a shell on the beach with a perfect hole in it for a necklace? Today, we're going to learn what caused that hole to be there!
Be sure to rate that fun fact!
If you want to support me further: www.buymeacoff...
Instagram: /briannadignard
Sources:
DOI: 10.1126/science.aam7468
#beach #shells #science #stem #stemeducation #everydayscience