Why Sharks Don’t Go To The Dentist

Shark teeth are covered in fluoride which makes them cavity-resistant. A study published in the Journal of Structural Biology in 2012 discovered that the enamel on sharks teeth is actually made up of a chemical called fluoroapatite. Fluoroapatite is resistant to acid produced by bacteria so this means that shark’s teeth don’t decay. Also, most…

Sharks Vs Dinosaurs

Sharks have been swimming in the oceans for almost 450 million years now. During that time, sharks have evolved into the perfect predators. Life began on earth about 3.8 billion years ago. The very first fish appeared around 510 million years ago. The first sharks, as we know them, showed up around 450 million years…