Life in Aquatic Ecosystems Testing Your Knowledge of Freshwater and Saltwater Ecosystems Based on Our Video and Powerpoint! MorganEvans24 published on May 15, 2012 Stacked 1/5 How big can kelp grow? 0-2 Feet 0-10 Feet Below 30m Over 30m 2/5 Which zone is a freshwater zone? Bathyal Zone Benthic Zone Abyssal Zone Coral Reef Zone 3/5 Which feshwater/saltwater ecosystem occurs when a river runs into an ocean? Coral Reef Kelp Forest Estuary Wetland 4/5 Where are deep-sea vents located? Abyssal Zone Intertidal Zone Littoral Zone Limnetic Zone 5/5 Which saltwater ecosystem has the largest biomass? Wetland Coral Reef Benthic Zone Limnetic Zone