Uncharismatic Fact of the Day
If you want pearls, don't bother looking at spiny oysters. As members of the order Pectinida, they are actually more closely related to scallops than true oysters. What's more, most species of spiny oyster have an extra layer of protection in the form of spines that grow from their shells, some of which can grow up to 5 cm (1.6 in) in length!
(Image: Spondylus varius by Frédéric Ducarme)













