Skip to main content
Access to this video is a benefit for members through PBS Passport.

Up Next

Kelp: Hidden Treasure of the Salish Sea

Kelp: Hidden Treasure of the Salish Sea

Season 14 Episode 1403
26:42
Changing Seas Season 14

Saving Florida’s Starving Manatees

Season 14 Episode 1404
26:42
Mollusks: More than a Shell

Mollusks: More than a Shell

Season 15 Episode 1501
26:42
Sharks in Belize: Jaguars of the Sea

Sharks in Belize: Jaguars of the Sea

Season 15 Episode 1502
26:42
Bermuda: Life at Ocean's Edge

Bermuda: Life at Ocean's Edge

Season 15 Episode 1503
26:42
Life in the Dark: The Polar Night

Life in the Dark: The Polar Night

Season 15 Episode 1504
26:42
Ancient Adriatic: Croatia's Sunken History

Ancient Adriatic: Croatia's Sunken History

Season 16 Episode 1601
26:42
Eagle Rays: Soaring on Spotted Wings

Eagle Rays: Soaring on Spotted Wings

Season 16 Episode 1602
26:42
Maui Aloha ‘Āina: From Mauka to Makai

Maui Aloha ‘Āina: From Mauka to Makai

Season 16 Episode 1603
26:42
California Sea Otters: Life on the Edge

California Sea Otters: Life on the Edge

Season 16 Episode 1604
26:42
Costa Rica's Surfing Paradise

Costa Rica's Surfing Paradise

Season 17 Episode 1
26:42
Whales in a Plastic Ocean

Whales in a Plastic Ocean

Season 17 Episode 2
26:42
Back to Show
Changing Seas

Humpback Health

Season 14 Episode 1402

How does the body size and overall health of humpback whales change across their migratory cycle? A team of researchers studying the animals, which spend part of the year feeding in Alaska and a few months fasting while in their Hawaiian breeding grounds, is making remarkable discoveries.