Opponents of the testing say it would do more than “harass” the animals — Frosh said major, constant seismic disruptions would be deadly. In the lawsuit, Frosh and the attorneys general of North Carolina, Virginia, Delaware, New Jersey, New York, Connecticut, Massachusetts and Maine argue the federal government underestimates the impact the testing would have on marine wildlife, and also overestimates their populations in order to make any potential harms appear less significant.