As computational power increases, and observational systems sample the envirnoment more densely, newly emerging Virtual Reality technologies allow us to view, analyze and interact with the data in new ways. VRML is a file format which allows users to access, navigate, explore and interact with environmental data in 3D on the Web. VRML is scalable across platforms ranging from PCs to high-end workstations, and Viewers or plug-ins are freely available for popular Web browsers, such as Netscape. We will present web-based interfaces that support interactive, 3D visualization of oceanographic data, including El Nino / La Nina data from the TAO network of El Nino monitoring buoys in the tropical Pacific Ocean