Snails Have Up to 25,000 Teeth and Zero Dentist Appointments

Meet the garden snail: unhurried, unassuming, and absolutely bristling with teeth. Tucked inside that humble shell is a creature with somewhere between 14,000 and 25,000 tiny teeth, arranged in rows along a flexible tongue-like organ called a radula. For comparison, sharks typically sport around 300 teeth at any given time. The snail is simply operating on a different scale.

The radula works like a biological cheese grater, rasping and scraping food into tiny digestible pieces as the snail inches across its meal. Each row of teeth can wear down and be continuously replaced, which means snails are in a constant state of rolling dental renewal. If dentists evolved from snails, flossing would be an extreme sport.

Different snail species carry different tooth counts depending on their diet. A snail grazing on soft algae needs a different dental toolkit than one working through tougher plant material. Evolution, as ever, matched the equipment to the job.

Here is the part that really tips it over into absurdity: snail teeth contain a mineral called goethite, making them one of the hardest biological materials ever measured, stronger even than spider silk. So the creature that travels at approximately zero miles per hour is carrying around a set of nano-scale geological drills. Nature never does anything simply.