1 Season

The Last Unknown Episodes

S1 E1

The Aleutian Islands

Ian Shive leads a risky expedition into a remote Alaskan wildlife refuge.
S1 E2

Palmyra Atoll

Ian explores one of Earth's most well-protected coral reef ecosystems.
S1 E3

Rose Atoll

Ian joins a team of scientists to unlock vital new info about coral reefs.
S1 E4

The Channel Islands

Ian explores one of America's least-known national parks.
S1 E101

Beyond the Aleutian Islands

Ian travels to Alaska to document large seabird and marine mammal colonies.