https://phys.org/news/2018-05-reservation-speciesfisherman-dolphins-ny-artificial.html

"Dolphins make lots of very different sounds – whistles to communicate, clicks to find fish and even one that sounds like a gun going off. Boat noises are very distinct, you can hear the engines go in and of gear, so you can tell when boats are drifting at idle or are moving back and forth over the reef. It's interesting to think about how we used the sounds to identify what fish were present and wonder if the dolphins are doing the same thing," said Wirth.

The underwater microphone also captured sounds from animals that were not seen visually during numerous visits to the reef. "With the planned expansion of the NY artificial reef program by New York State, there are numerous opportunities to extend this work to multiple locations and new sites to further study how humans and dolphins (as well as other species) are sharing these habitats," said Joe Warren, Stony Brook University SoMAS Associate Professor, Wirth's advisor and co-author of the study.