问题：
Common environmental concerns associated with mari
答案：
the risk of marine mammals and fish being struck by tidal turbine bladesthe effects of EMF and underwater noise emitted from operating marine energy devicesthe physical presence of marine energy projects and their potential to alter the behavior of marine mammals, fish, and seabirds with attraction or avoidancethe potential effect on nearfield and farfield marine environment and processes such as sediment transport and water quality