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Federal Register / Vol. 86, No. 106 / Friday, June 4, 2021 / Notices TABLE 1MARINE MAMMALS THAT COULD OCCUR IN THE SURVEY AREAContinued
Common name
Pacific white-sided dolphin.
Northern right whale dolphin.
Rissos dolphin
Killer whale

Family Phocoenidae porpoises:
Harbor porpoise
Dalls porpoise

ESA/
MMPA
status;
strategic Y/N 1

Stock abundance CV, Nmin, most recent abundance survey 2

Scientific name
Stock
Lagenorhynchus obliquidens.
Lissodelphis borealis

North Pacific 6

-; N

CA/OR/WA

-; N

Grampus griseus

CA/OR/WA

-; N

ENP Offshore
ENP Gulf of Alaska, Aleutian Islands, and Bering Sea Transient.
ENP West Coast Transient ENP Alaska Resident
Northern Resident

-; N
-; N

26,880 n/a; 26,880;
1990.
26,556 0.44; 18,608;
2014.
6,336 0.32; 4,817;
2014.
300 0.1; 276; 2012
587 n/a; 2012

-; N
-; N
-; N

349 n/a; 2018
2,347 n/a; 2012
302 n/a; 2018

Southeast Alaska

-; Y

Unknown

Alaska 6

-; N

83,400 0.097; n/a;
1991.

Orcinus
orca 5

Phocoena phocoena vomerina.
Phocoenoides dalli dalli

British Columbia abundance 3

Annual M/SI 4

PBR

22,160

Undet.

0

179

3.8

46

3.7

371

2.8
5.9

0
0.8

3.5
24
2.2

0.4
1 0.2

8,091

Undet.

34

5,303

Undet.

38

11,067

387

14,011

321

15,348

318

255

2,592

112

356

77

644

69

746

40

4,882

8.8

Order CarnivoraSuperfamily Pinnipedia Family Otariidae eared seals and sea lions:
Northern fur seal

Callorhinus ursinus

California sea lion

Zalophus californianus

Steller sea lion

Eumetopias jubatus jubatus.
E. j. monteriensis

Phoca vitulina richardii

Family Phocidae earless seals:
Harbor seal

Northern elephant seal
Mirounga angustirostris

Pribilof Islands/Eastern Pacific.
United States

D; Y
-/-; N

Western U.S.

E/D; Y

608,143 0.2;
514,738; 2018.
257,606 N/A, 233,515, 2014.
52,932 n/a; 2019

Eastern U.S.

-/-; N

43,201 n/a; 2017

Sitka/Chatham Strait

-; N

Dixon/Cape Decision

-; N

Clarence Strait

-; N

California Breeding

-; N

13,289 n/a; 11,883;
2015.
23,478 n/a; 21,453;
2015.
27,659 n/a; 24,854;
2015.
179,000 n/a; 81,368;
2010.

24,916

Stocks marked with an asterisk are addressed in further detail in text below.
1 Endangered Species Act ESA status: Endangered E, Threatened T/MMPA status: Depleted D. A dash - indicates that the species is not listed under the ESA or designated as depleted under the MMPA. Under the MMPA, a strategic stock is one for which the level of direct human-caused mortality exceeds PBR or which is determined to be declining and likely to be listed under the ESA within the foreseeable future. Any species or stock listed under the ESA is automatically designated under the MMPA as depleted and as a strategic stock.
2 NMFS marine mammal stock assessment reports at: www.fisheries.noaa.gov/national/marine-mammal-protection/marine-mammal-stock-assessments. CV is coefficient of variation; Nmin is the minimum estimate of stock abundance. In some cases, CV is not applicable. For most stocks of killer whales, the abundance values represent direct counts of individually identifiable animals; therefore there is only a single abundance estimate with no associated CV. For certain stocks of pinnipeds, abundance estimates are based upon observations of animals often pups ashore multiplied by some correction factor derived from knowledge of the species or similar species life history to arrive at a best abundance estimate; therefore, there is no associated CV. In these cases, the minimum abundance may represent actual counts of all animals ashore.
3 Total abundance estimates for animals in British Columbia based on surveys of the Strait of Georgia, Johnstone Strait, Queen Charlotte Sound, Hecate Strait, and Dixon Entrance. This column represents estimated abundance of animals in British Columbia, where available, but does not necessarily represent additional stocks.
Please see Best et al. 2015 and Pitcher et al. 2007 for additional information.
4 These values, found in NMFSs SARs, represent annual levels of human-caused mortality plus serious injury from all sources combined e.g., commercial fisheries, subsistence hunting, ship strike. Annual M/SI often cannot be determined precisely and is in some cases presented as a minimum value. All M/SI values are as presented in the draft 2020 SARs.
5 Transient and resident killer whales are considered unnamed subspecies Committee on Taxonomy, 2020.
6 Abundance estimates for these stocks are not considered current. PBR is therefore considered undetermined for these stocks, as there is no current minimum abundance estimate for use in calculation. We nevertheless present the most recent abundance estimates, as these represent the best available information for use in this document.
7 This stock is known to spend a portion of time outside the U.S. EEZ. Therefore, the PBR presented here is the allocation for U.S. waters only and is a portion of the total. The total PBR for blue whales is 2.1 7/12 allocation for U.S. waters. Annual M/SI presented for these species is for U.S. waters only.

Table 1 denotes the status of species and stocks under the U.S. MMPA and ESA. We note also that under Canadas Species at Risk Act, the sei whale and blue whale are listed as endangered; the fin whale and northern resident, offshore, and transient populations of killer whales are listed as threatened;
and the humpback whale, harbor
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porpoise, and Steller sea lion are considered species of special concern.
Two populations of gray whales are recognized, eastern and western North Pacific ENP and WNP. WNP whales are known to feed in the Okhotsk Sea and off of Kamchatka before migrating south to poorly known wintering grounds, possibly in the South China Sea. The two populations have
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historically been considered geographically isolated from each other;
however, data from satellite-tracked whales indicate that there is some overlap between the stocks. Two WNP
whales were tracked from Russian foraging areas along the Pacific rim to Baja California Mate et al., 2011, and, in one case where the satellite tag remained attached to the whale for a
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