Two types of tours are available to experience the thrill of Jökulsárlón. Most tourists opt for an amphibious boat. Passengers embark onto a flat deck surrounded by bench seats. Then the vehicle drives into the lagoon and floats among the icebergs for about 40 minutes. Adventurous people sign up for a Zodiac tour. These are lightweight and fast inflatable boats. They skim across the water and travel further into the glacier lake until reaching the terminus. It is thrilling to watch calving icebergs as they break free from the glacier, splash into the water, twist and turn and sparkle brightly.