NW Northwest Atlantic
NE Northeast Atlantic
SA South Atlantic
P Present day sample from frozen tissues
H Historical sample from bone samples
ROM Royal Ontario Museum, Toronto, ON, CA.
NMNH Smithsonian National Museum of Natural History, Washington DC.
CMNMA Canadian Museum of Nature, Ottawa, ON.
NPI Norwegian Polar Institute, Tromsø, Norway
SlM Slottsfjells Museum, Tønsberg, Norway
WM The Whaling Museum, Sandefjord, Norway