Past results

30 years of preliminary data

Each count Saturday produces a snapshot of humpback whale activity across the sanctuary. Annual summaries are published as downloadable PDFs.

annual reports archived (2018 – 2025)

Earlier years exist in the sanctuary's archives. For data before 2018, contact the program directly — we'll send the historical reports we have on file.

Year-by-year

Click any year to open the preliminary data report. Most are downloadable PDFs — allow a moment for the file to load.

2025 30th-anniversary season — first year with full digital tally pilot
Open report
2024 Three counts completed across all islands
Open report
2023 Sanctuary-wide participation; new sites added on Hawaiʻi Island
Open report
2022 Hybrid in-person + virtual reporting after pandemic adjustments
Open report
2021 Reduced sites due to public-health restrictions
Open report
2020 January count completed; later counts curtailed
Open report
2019 Full three-count season; archival photo set on the gallery page
Open report
2018 Early-season report archived; site-leader notes published
Open report

Looking for pre-2018 results?

E-mail the Ocean Count team to request earlier project results. Reports from previous count seasons are available on file at the sanctuary.

Request earlier reports