“No one knew for sure how much black sea bass can hear and how that changes as they age,” said Beth Phelan, a fishery biologist at the Northeast Fisheries Science Center’s laboratory at Sandy Hook, N.J. and a co-author of the study, in a narrative published online by the National Oceanic and Atmospheric Administration. “We do know that black sea bass are attracted to underwater structures, and have anecdotal information that they move away from noise. We had to first determine the range of sounds they can hear by giving them a type of hearing test, much like we do to humans.”