Rule banning swimming with spinner dolphins goes into effect Oct. 28

In this undated file photo provided by NOAA Fisheries, spinner dolphins swim in Hawaii. The National Marine Fisheries Service Tuesday published its final rule banning the popular practice of swimming with the mammals in Hawaiian waters effective Oct. 28 saying the regulation under the Marine Mammal Protection Act is necessary to protect the nocturnal animals from those seeking encounters with the playful species. (NOAA Fisheries/via AP, File)

This undated photo provided by NOAA Fisheries shows spinner dolphins in Hawaii surrounded by people seeking close interactions as multiple boats and dozens of people are sometimes in the water with dolphins at once. (NOAA Fisheries/ via AP, File)

Swimming with Hawaiian spinner dolphins will be a thing of the past come next month.