Up Next
Back to Show
Watch Preview
Changing Seas
Biggest Fish in the Sea
Season 6
Episode 2
Each summer, the world’s largest known aggregation of whale sharks occurs just off the coast of Cancun, Mexico. Hundreds of these gentle giants come to the area to feed on plankton, giving experts the opportunity to learn more about the largest fish in the sea.
Support Provided By
Season
26:42
Experts study southern sea otters to ensure their longtime survival on California’s coast.
26:42
Islanders restore Maui's watersheds through traditional Hawaiian wisdom.
26:42
Florida scientists make remarkable discoveries about whitespotted eagle rays.
26:42
Marine archaeologists uncover a Roman shipwreck on Croatia's Adriatic Coast.
Unlock with PBS Passport
26:42
Researchers brave the Arctic’s cold and dark to reveal the mysteries of the Polar Night.
Unlock with PBS Passport
26:42
Amid shipwrecks and shifting sands, Bermuda’s corals offer clues to climate resilience.
Unlock with PBS Passport
26:42
Knowledgeable fishers collaborate with scientists to keep sharks abundant.
26:42
Researchers and citizen scientists document the fascinating lives of seashells.
Unlock with PBS Passport
26:42
Florida’s gentle giants are dying in record numbers.
Unlock with PBS Passport
26:42
Experts are working to conserve and restore the Puget Sound’s declining kelp forests.
Unlock with PBS Passport
26:42
Scientists study the body size and health of humpback whales across their migratory cycle.
26:42
Experts study declines in the number of humpbacks migrating between Alaska and Hawaiʻi.