| Country | Địa phương | được giới thiệu | Năm | Qualitative Value | Tài liệu tham khảo |
|---|---|---|---|---|---|
| Alaska | Burger study area, northeastern Chukchi Sea | 2008 - 2008 | common | 118567 | |
| Alaska | Burger study area, northeastern Chukchi Sea | 2009 - 2009 | extremely abundant | 118567 | |
| Alaska | Burger study area, northeastern Chukchi Sea | 2010 - 2010 | abundant | 118567 | |
| Alaska | Klondike study area, northeastern Chukchi Sea | 2008 - 2008 | rare | 118567 | |
| Alaska | Klondike study area, northeastern Chukchi Sea | 2009 - 2009 | rare | 118567 | |
| Alaska | Klondike study area, northeastern Chukchi Sea | 2010 - 2010 | rare | 118567 | |
| Alaska | Statoil study area, northeastern Chukchi Sea | 2010 - 2010 | very common | 118567 |