Most of the data on pilot whale mortalities comes from mass stranding events. In 1988, Jeremy Stafford-Deitsch reported seeing an individual accompanied by a shortfin pilot whale. The short-finned pilot whale is less populous. The book was a photo-journalistic account of a pilot whale drive in a Faroese bay. The pilot whale is not registered as an endangered species. REM sleep has been observed in the pilot whale, a species of dolphin. The pilot whale hunt has a well-developed system of communication. A pilot whale drive is always under supervision of local authorities. In May 2018 a juvenile pilot whale in southern Thailand beached and died. The short-finned pilot whale is listed on Appendix II of CITES. It shares the genus "Globicephala" with the short-finned pilot whale ("Globicephala macrorhynchus"). The most popular species of whale found in Cape Breton's waters is the Pilot whale.