Realistic real-time immersive interaction and visualization of underwater archaeological sites using contemporary graphics hardware has the potential to provide scientists, archaeologists and the general public with access to these otherwise inaccessible locations. This paper provides an overview of some of the techniques available for the generation of these marine environments. Initially we describe a sonar technique that can be used for the generation of accurate marine bathymetry. We subsequently suggest techniques for increasing the realism of a computer rendered underwater environment including a novel technique for rendering marine life in real-time. We conclude by describing power wall and hemispherical immersive display technologies that are applicable to the visualization of marine environments.