Wetlands are critical to our environment, and we can simulate them in the K.C. Irving Environmental Science Centre. The glass-enclosed Wetlands Research Laboratory (55 m2) contains three customed made mesocosm tanks equipped with recirculating water to simulate tidal or seasonal flushing of mudflat and marsh ecosystems. All functions are computerized and can be used for systems from coastal zones to deep-water simulations. This laboratory supports experimental studies of the dynamic processes that shape these ecosystems with capacity for the analysis of interactions among macrophytes, benthic micro-organisms and grazing invertebrates. Special mud flumes are used to simulate sediment deposition. Benches can also be used for physical modeling of larger-scale ecosystems.