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Hawaii Deep-set Longline Fishery Quarterly and Annual Status Report 2020

April 16, 2021

Pacific Islands Region Observer Program Hawaii deep-set longline data reports of observer coverage, protected species interactions, and set and hook unit effort for vessels arriving with observers during 2020.

NOAA Fisheries monitors the Hawaii deep-set pelagic longline fishery (targeting tunas) through a mandatory observer program. This report summarizes data for deep-set fishing trips. It ensures prompt dissemination of Hawaii longline observer data, and may be revised after final data editing. The following table summarizes the percent observer coverage for vessel departures, vessels arriving with observers, protected species interactions, and set and hook unit effort for vessels arriving with observers.

Vessel Departures

  January 1–March 31, 2020 April 1–June 30, 2020 July 1–September 30, 2020 October 1–December 31, 2020 January–December 2020
Departures 411 417 368 391 1587
Departures with observer 73 32 67 70 242
Observer coverage 17.8% 7.7% 18.2% 17.9% 15.2%

Vessels Arriving with Observers

  January 1–March 31, 2020 April 1–June 30, 2020 July 1–September 30, 2020 October 1–December 31, 2020 January–December 2020
Departures with observers 73 32 67 7 242
Observers departing previous quarter and arriving this quarter 9 7 13 14 9
Observers departing this quarter and arriving next quarter 7 13 14 13 13
Total vessels arriving with observers 75 26 66 71 238

Protected Species Interactions

  January 1–March 31, 2020 April 1–June 30, 2020 July 1–September 30, 2020 October 1–December 31, 2020 January–December 2020
Vessels arriving with observers 75 26 66 71 238
Trips with turtle interactions 9 1 3 2 15
Trips without turtle interactions 66 25 63 69 223

Trips with marine mammal interactions

3

1

8

0

17

Trips without marine mammal interactions

72

25

58

71

221

Trips with seabird interactions

32

8

3

5

48

Trips without seabird interactions

43

18

63

66

190

 

Sea Turtle Interactions

Sea turtle Interactions January 1–March 31, 2020 April 1–June 30, 2020 July 1–September 30, 2020 October 1–December 31, 2020 January–December 2020

Released dead olive ridley

7

 

2

 

9

Released dead green

1

   

1

2

Released dead loggerhead

1

     

1

Released injured leatherback

2

1

1

 

4

Release injured loggerhead

1

 

1

 

2

Released injured olive ridley

1

   

1

2

Total sea turtle interactions

13

1

4

2

20

 

Marine Mammal Interactions

Marine Mammal Interactions January 1–March 31, 2020 April 1–June 30, 2020 July 1–September 30, 2020 October 1–December 31, 2020 January–December 2020

Released dead rough-toothed dolphin

   

2

 

2

Released injured bottlenose dolphin

1

     

1

Released injured false killer whale

   

2

2

4

Released injured rough-toothed dolphin

 

1

 

2

3

Released injured Risso’s dolphin

1

 

1

 

2

Released injured beaked whale

   

1

 

1

Released injured unidentified cetacean

1

 

2

1

4

Released unidentified kogia whale

   

1

 

1

Total marine mammal interactions

3

1

9

5

18

 

Seabird Interactions

Seabird Interactions

1/1/2020-3/31/2021

4/1/2020-6/30/2021

7/1/2020-9/30/2020

10/1/2020-12/31/2020

1/2020-12/2020

Released dead Black-footed albatross

66

12

3

6

87

Released dead Laysan albatross

46

2

7

 

55

Released dead brown booby

1

     

1

Released dead sooty shearwater

 

1

   

1

Released injured black-footed albatross

9

     

9

Released injured Laysan albatross

4

     

4

Total seabird interactions

126

15

10

6

157

 

Set and Hook Unit Effort for Vessels  

  January 1–March 31, 2021 April 1–June 30, 2021 July 1–September 30, 2020 October 1–December 31, 2020 January–December 2020

Total sets

939

283

927

982

3,131

Total hooks set

2, 597, 411

771, 331

2,618,501

2,750,768

8,738,011

Turtles per 1,000 hooks

0.005

0.001

0.002

0.001

0.002

Seabirds per 1,000 hooks

0.049

0.019

0.004

0.002

0.018

Marine mammals per 1,000 hooks

0.001

0.001

0.003

0.002

0.002

 

The percent coverage is based on vessel departures. Protected species interactions are based on vessel arrivals. For the purpose of this report, an animal that is hooked or entangled is considered an interaction.

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Last updated by Pacific Islands Regional Office on 08/10/2021

Pacific Islands Region Observer Program