In order to explore fundamental science concepts, Water on the Web has created tutorials utilizing the aquatic environment and real lake data. The site provides two types of lessons covering the same concepts: the Studying lessons, which are guided; and the Investigating lessons, which involve problem solving. High school and college students will find hands-on activities dealing with basic science principles such as Conductivity and Thermal Stratification. The Web site also addresses the important concepts of data collection, management, analysis and presentation. Providing many images and small Java presentations, students will find this Web site both intriguing and educational.