Rejected from an underwater habitat project in 1969 for being a woman, marine biologist Sylvia Earle returned a year later to lead its first all-female team of aquanauts. This episode traces her path from the New Jersey wetlands to becoming NOAA's first female chief scientist.

We explore her record 1979 untethered dive in a JIM suit, her pivot into subsea engineering, her research in the oil-choked Persian Gulf, and Mission Blue's hope spots pushing to protect the global ocean.

• Leading the first all-female Tektite II aquanaut team
• Her 1979 untethered JIM-suit dive off Oahu
• Founding Deep Ocean Engineering and designing submersibles
• Serving as NOAA's first female chief scientist
• Launching Mission Blue and its global hope spots