When you think of warm water, lots of sun and seemingly endless beaches, what comes to mind? For many, it's Hawaii. But there is more to do in Hawaii than sunbathe. Learn about the countless Hawaii adventures that you can have on your next visit to this beautiful paradise destination. You can explore Hawaii on land, air or sea and take advantage of all the state has to offer. For hikers, there are fabulous nature trails on every Hawaiian island, including treks for beginners and experts. On Maui, Haleakala is revered as one of the state's best hiking spots. A favorite hike on Oahu is the 45-minute climb to the top of Diamond Head, where visitors are rewarded with sweeping views of Waikiki, Honolulu and the Pacific Ocean. On the Big Island, head to Hawaii Volcanoes National Park and take on the Kilauea Iki Trail, a five-mile adventure that begins at the Thurston Lava Tube. If hiking is not your thing, and you prefer to cycle your way around, fear not, there is plenty for you to do as well. Haleakala has a wonderful down hill route made for biking and Lanai has a place called the Garden of the Gods. This is a place that looks like the surface of the moon and has very colorful rocks and craters in the landscape. Another popular way to see this island is horseback riding. One of the United States largest ranches, a sprawling 175,000 acres, Parker Ranch is on the Big Island where you can pretend you are a cowboy for the afternoon. Skiing? In Hawaii? Yes, indeed. The summit of Mauna Kea on the Big Island is usually blanketed with snow from late November through April. Only advanced skiers should attempt to brave these slopes, however. The ocean provides many exciting recreational opportunities. Take a surfing lesson at Waikiki Beach, where gentle waves and shallow waters are perfect for novices. Snorkel at Hanauma Bay or go SCUBA diving at Cathedrals, located just off Lanai's south shore. Hook a marlin or tuna on the deep waters off Kailua-Kona on the Big Island. Or head to Kauai and enjoy a kayaking trip along the breathtaking Napali Coast. If you want to see the island from the sky, almost every one of the Hawaiian islands offer hang gliding lessons or helicopter rides. If you are a little more adventurous, you can go skydiving on Oahu. Here, a licensed instructor will jump out of the plane in tandem at 13,000 feet. But that's still not all. You can also enjoy camping, windsurfing, whale watching and more. This list just goes on and on. So when you are planning your next Hawaiian vacation, plan on doing something, rather than nothing.