The Humpback whale population that migrates between Hawaiʻi and Alaska is considered a conservation success story. When sightings of the animals suddenly dropped, people became concerned. Scientists in both locations are trying to understand what happened to the whales and why.

0:00 Trailer
5:37 Intro/Hawai‘i Humpback Whales
8:10 HIHW National Marine Sanctuary Research
13:00 Humpback Whale Mothers and Calves
14:20 Aerial Surveys
15:52 Alaska Humpback Whales
16:49 North Pacific Marine Heatwave
19:57 Whale Health Research
22:47 Humpback Whale ID
23:55 Humpback Whale Biopsies
24:42 Conclusion