Episode Ratings Grid

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Episode Power Rankings

The peaks and the valleys. Find the essential episodes — and the ones to skip.

#1
S1E2 8.1
Descent Into Darkness

In a deep-water submersible, Will Smith descends 3,300 feet to the bottom of the ocean, where even fewer people have gone than outer space. Along the way down, Will and explorer Diva Amon investigate how color is used in the natural world.

#2
S1E3 8.1
Mind of the Swarm

Thirty years ago, Will Smith was mesmerized by a photo of the incredible wildebeest migration across the Serengeti in a National Geographic magazine. Now he visits those same wildebeests and discovers an amazing survival strategy.

#3
S1E4 8.1
Power of Scent

On the trail of tiger sharks in the Pacific, Will explores the power of smell. For humans, the sense of smell triggers deep memories and emotions, but it has an even more vital function in the animal world.

#4 Speed of Life S1E5 8.1
#5 The Silent Roar S1E1 8.0
#6 Beyond Fear S1E6 7.8

Lowlights

#6 S1E6 Beyond Fear 7.8

For Will’s final journey, an ultimate challenge. He and polar explorer Dwayne Fields are dropped by helicopter in the middle of an Icelandic glacier.

#5 The Silent Roar S1E1 8.0
#4 Speed of Life S1E5 8.1
#3 Power of Scent S1E4 8.1
#2 Mind of the Swarm S1E3 8.1

The Quality Arc

Each point is an episode, plotted in order. Colored bands mark season boundaries. Look for the rise, the plateau, or the decline.

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Episode Engagement

High votes + high rating = beloved classic. High votes + low rating = notorious stinker. Low votes + high rating = hidden gem.

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