Stylish, sustainable, wooden stingray earrings. But wait.. sting rays aren’t sharks – how can this be shark merch? Well the truth is, that stingrays are very close cousins of sharks as both have skeletons made of cartilage. For that reason they made the cut. That, and stingrays are some of the most stunning creatures to see on a SCUBA dive.. they made me all nostalgic. .