Estimates of non-U.S. longline interactions with Hawaiʻi pelagic false killer whales Pseudorca crassidens within the assessment area 2012– 2024

Key Points

• This report aims to quantify interactions between non-U.S. longline fishing and Hawaiʻi pelagic false killer whales from 2012 to 2024.
• Analyzed non-U.S. longline fishing effort using data from regional fisheries management organizations.
• Applied Hawaii deep-set longline observer program interaction rates to estimate interactions in the assessment area.
• Utilized Global Fishing Watch vessel activity data for accurate data apportionment.
• Estimated interactions indicate a measurable impact on false killer whale populations from non-U.S. longline fishing.
• The report provides insights for regional fisheries management to better protect false killer whales.
• Significant data highlights the need for improved monitoring and regulation of longline activities.