Mareblu is a scuba dive simulator based on an Haldanian model. It uses a 10 tissue model and graphically displays Nitrogen saturation and desaturation into the different tissues of the body during a simulated diving. Mareblu can perform repetitive dives, track air consumption, and adjust simulation speed. Mareblu uses metrics/imperial units, and is designed for compressed air dives and dives starting from the sea level altitude only . It is primarily conceived as a teaching aid, to demonstrate the effects of different dive profiles on tissue nitrogen absorption.