Has any shark species gone extinct?

Yes, several shark species have gone extinct, with the most notable being the Megalodon, which lived approximately 23 to 3.6 million years ago. Other species, such as the Ptychodus and various prehistoric sharks, have also disappeared from the fossil record. Modern threats, including overfishing, habitat loss, and climate change, continue to put many contemporary shark species at risk of extinction. Conservation efforts are essential to protect these vulnerable populations from following the same fate.