Glacier Bay & Icy Strait Humpback Whale Population Monitoring: 2025 Update
Neilson JL , Gabriele CM, Bishop PD. 2026. Glacier Bay & Icy Strait Humpback Whale Population Monitoring: 2025 Update. National Park Service
This Resource Brief summarizes Glacier Bay National Park & Preserve's humpback whale monitoring program in Glacier Bay and Icy Strait, Alaska in 2025, our 41st consecutive year of consistent data collection. Each summer since 1985, Park biologists have conducted vessel-based photo ID surveys to document the number of individual humpback whales, as well as their residence times, spatial and temporal distribution, reproductive parameters, and feeding behavior.
- Type
- Resource Brief
- Authors
- Neilson, Janet; Gabriele, Christine; Bishop, Piper
- Date of Issue
- 2026-04
- Publisher
- National Park Service
- Units
- GLBA