How many sharks are there in the world seas?

The exact number of sharks in the oceans is not known, but there are estimated to be around 500 different shark species. The total number of sharks in the world is likely to be in the hundreds of millions, but this is just an estimate and the real number could be much higher or lower. Sharks are found in all the world's oceans, from the tropics to the poles, and from shallow inshore waters to the deepest parts of the ocean.