[["Some sharks can have over 50,000 teeth over the course of their lives! Many sharks have teeth in layered rows. Both their upper and lower jaws can have 2-3 or as many as 15 such rows. Their teeth do not have roots, so they break off easily and may last as little as a week. ", 74.0], ["Sharks can have up to 300 teeth", 72.0]]
how many teeth do shark have
animals,sharks,hammerhead shark