orologio en Altadefinizione. Surfing is one of the more popular global sports. It is estimated there are between 17 and 23 million surfers worldwide in more than 70 countries. These numbers continue to grow every year as the sport increases in popularity. Surfing however is a relatively new sport in terms of popularity compared to other leisure sports like tennis and golf. These sports have been around for hundreds of years. So when and where did surfing start becoming so popular?