Both coastal and floating nuclear powerplants may result in similar consequences for the ocean environments. Although the surrounding seawall could provide an artificial reef that is an advantageous environment for some marine life forms, there are potential negative effects on animal and plant life near-shore (for coastal plants) or further offshore (with deep-water floating plants). Intrusion of marine organisms into power station systems during water entrainment could reduce species variety and number of individual organisms.
Coastal and floating nuclear powerplants can have similar impacts on ocean environments. While a seawall surrounding these plants could create an artificial reef that benefits certain marine life, there are potential drawbacks for coastal plants and deeper-water floating plants. The introduction of non-native species into the power plant systems through water circulation may reduce biodiversity.