Browse all 4 episodes in this season, including available images, air dates, runtimes, ratings and episode summaries from TMDB.
Episode 1
Scientists explore mysterious blue holes scattered throughout the Gulf of Mexico.
Episode 2
Ten years after the Deepwater Horizon oil rig disaster, scientists study its devastating impacts on the Gulf of Mexico and use lessons learned to prepare for the next big spill.
Episode 3
Scientists study the adorable Humboldt penguins that nest along Peru’s desert coastline.
Episode 4
Experts study what makes American Samoa’s coral reefs more resilient than reefs elsewhere.