The Cook Islands invite those who would like to experience different adventure sports. Try out your hands in fishing, for the advanced fishing enthusiasts even the fishing expeditions can be organized. The Rarotonga and Aitutaki Islands are ideal places for the scuba-diving. For the beginners the diving courses are held at the dive centers all over the country. Many international visitors also come to the Cook Islands to learn scuba-diving. Hiking is very popular at the Cooks. The most famous hiking trails include Papua Waterfall, Cross Island track, and Avana Valley. Whale watching can be done near the shoreline of Rarotonga during the months from July to October.