Secrets of the Penguins: Story, Cast and Series Facts

Story and premise

On the 20th anniversary of National Geographic's Academy Award®-winning "March of the Penguins," SECRETS OF THE PENGUINS changes everything we ever believed to be true. From the emperor penguins' revelatory bonds of friendship to the gritty resolve of gentoos and rockhoppers and the astonishing ingenuity of the migrant penguins that reached deserts and far beyond, their incredible traditions and societies echo ours in ways we never dreamt possible — until now. For over two years, BAFTA and Emmy® Award-winning wildlife cinematographer Bertie Gregory has collaborated with world-leading scientists, using cutting-edge camera technology and unique access to capture three world-first episodes that resonate with our lives like never before.

Series details

• Title: Secrets of the Penguins
• Format: Documentary
• Language: English
• Genres: Nature
• Premiere date: 2025-04-20
• Final broadcast date listed: 2025-04-20
• Status in TVmaze: Ended
• Network listed by TVmaze: National Geographic
• Network country: United States
• Typical episode runtime: 60 minutes
• TVmaze community rating: 6.6/10
• TVMaze ID: 83185
• IMDb ID: tt26351137
• TVDB ID: 462070

Cast and credited roles

• Blake Lively — Narrator
• Bertie Gregory — Bertie Gregory

Seasons in the TVmaze catalogue

• Season 1: premiered 2025-04-20; final listed air date 2025-04-20; episode order: 3.

Source and licence

Adapted from Secrets of the Penguins on TVmaze. The synopsis is reproduced as plain text; catalogue facts, cast and season records are selected and reformatted. This adapted text is available under CC BY-SA 4.0, following the TVmaze API licence. Network and web-channel credits identify the service listed in this source; they do not establish current streaming availability.