Wildlife

Secrets of “Secrets of the Penguins:” Behind the scenes of the hit docuseries

Penguin expert Pablo García Borboroglu and wildlife filmmaker Bertie Gregory share insights into the latest installment of National Geographic’s hit “Secrets of” franchise 

  • Jun 27, 2025
  • 1,305 words
  • 6 minutes
A colony of magellanic penguins in Punta Ninfas, Argentina. The animals are featured in the National Geographic television series Secrets of the Penguins. (Photo: Luján Agusti/National Geographic)
Expand Image
Advertisement
Advertisement
Advertisement

The greatest act of courage Pablo Borboroglu García has ever seen wasn’t performed by a human, but rather by a half-metre-tall female rockhopper penguin. 

In an astonishing scene from Secrets of the Penguins, a new National Geographic docuseries streaming now on Disney+ and Hulu, the penguin, stuffed so full of fish for her newly hatched chicks that she can barely hop, shouts down a pursuing sea lion 70 times her size, and scares it off. For Borboroglu, who has dedicated his career to studying penguins and advocating for their conservation, the penguin’s actions are symbolic, proving that we can — must — face the huge challenges of climate change and biodiversity loss head-on. 

Borboroglu and filmmaker Bertie Gregory were recently named the 2025 Rolex National Geographic Explorers of the Year for their work on the miniseries. Here, they discuss the challenges (and joys) of filming penguins, surprising discoveries, and why these unique and resilient birds should matter to us all. 

On wanting to show viewers something new

PB: This is a fantastic series because it shows things that nobody has seen before and allows people to understand how difficult it is to be a penguin. In movies or in cartoons, penguins are always happy and it’s not the case. I love the footage of the Galápagos penguins diving with this abundance of fish. You realize that they’re so fast, so graceful in the ocean. They are marine birds. They spend over 70 per cent of their lives in the ocean and when they have to get on land, it’s a nightmare! 

BG: I was pretty worried to start with because I knew from my experience that penguins live in very hard places to film. They’ve also been filmed a lot and there are a lot of iconic penguin documentaries. If you call the series Secrets of the Penguins, you’re setting yourself a high bar. You have to show something that people have never seen! But I was very relieved that I was completely wrong and had my mind blown many times during the filming of the series. And yeah, we revealed a lot of secrets. 

Advertisement

On the challenges of filming penguins

BG: Penguins don’t just live in Antarctica, but Antarctica is probably the hardest place to film them. We spent two and a half months camping next to an emperor penguin colony. We could see the penguins, hear the penguins, smell the penguins 24 hours a day — magic. However, one of the key things we wanted to show was how the chicks survive storms growing up. Of course, if you’re going to film a chick in a storm, that means you have to be in the storm too. We had one storm that got real crazy and it ended up ripping almost all of our tents and they filled with snow, so we had to enact our emergency plan, which involved bailing out to an old South African research station that was essentially two abandoned shipping containers welded together on the ice. We slept in those containers for six days, waiting for this relentless storm to pass. And what really occurred to me during that time, when we were bored and cold, was that the penguins have been out in this. They have no tent, they have no shipping container; they just take it. We expected, going back to the colony, that there would be dead penguins everywhere, and they were just like, “Hey, what’s up? Yeah, that sucked.” That’s just life for them. They’re so tough. 

On surprises during filming

PB: In the third chapter of the series, we filmed penguin couples in the Falkland Islands, where each partner belonged to a completely different species — macaroni penguins and rockhopper penguins. Normally, when these hybrid couples breed, the eggs don’t hatch or the chicks don’t survive, but that wasn’t the case here. The eggs hatched, the chicks survived, and we saw hybrids breeding with other hybrids, and hybrids breeding [with one of the two initial species]. When you study evolution, hybridization is one way new species appear. To be able to see that in person and film that for the first time was fantastic. I literally say we are witnessing evolution before our eyes. 

BG: I thought I knew penguins before I started. I was so wrong. Just when I thought they’d hit the limit and that was the end, they’d find a way to make it through. In filming the emperor penguins, we were filming the chicks taking their first swim. At five months old, they’re abandoned by their parents, and something deep down inside them says, I need to go and find the ocean. And even though they’ve never been there and there’s no one who’s been there before to show them, they find it. They then take their first swim by jumping off of sea ice, which is usually a one- or two-foot-high drop, but we followed this one group of chicks who took a wrong turn on their way to the sea and found themselves at the top of a 50-foot ice cliff. We were thinking, “What the heck are they gonna do here?” One of the chicks was a bit braver than the others; it jumped off and the rest soon followed. This had never been filmed before, so lots of people have assumed that this is a new thing. I don’t think so. I think they’ve been doing this for millions of years and it’s just that we’ve now got the technology to film it.

Secrets of the Penguins sees wildlife filmmaker Bertie Gregory team up with conservationist and fellow 2025 Rolex National Geographic Explorer of the Year Pablo Borboroglu to offer brand-new insights into the world of penguins. (Photo © National Geographic/James Brickell for Disney+)
Expand Image
Conservationists Pablo Borboroglu and Candela Tisera Manochio, from the Global Penguin Society, greet a magellanic penguin as they develop different measurements for the animals. Estancia San Lorenzo, on Argentina’s Valdes Peninsula, is home to the world’s largest colony of magellanic penguins. (Photo: Luján Agusti/National Geographic)
Expand Image

On the decision to anthropomorphize the penguins

BG: Traditionally, nature documentaries have been very kind of standoffish and “voice of God,” but even if you look at the legend that is Sir David [Attenborough] and the evolution of his documentaries, we’ve moved on from this colonial, dominion-over-nature sort of thing. If you watch an individual animal and focus on that individual animal, suddenly you realize that these animals are individuals. We’re not just losing penguins when penguins are in trouble; we’re losing Steve or Bill or whatever they’re called. I think that is the way to get people to connect with the natural world. 

On why we should care about penguins

BG: It might feel like penguins live very far away, but they are indicators of ocean health, so we shouldn’t just want to pay attention to how penguins are doing because they’re cute and funny. Their success is intricately tied to our success. It might feel like there’s nothing you can do because most penguins live thousands of miles from where you live, but penguins need a really wild, healthy planet, as do we. So what you can do is, firstly, vote with your wallet. The food you eat, the clothes you wear, the car you drive — all of it has an effect on the environment, positive or negative, so use that to inform your decisions. And we can all make our planet wilder. Plant some native plants to help local pollinators, get involved in your local nature reserve. It might not feel like you’re making much of a difference, but collectively, it’s huge.

PB: Magellanic penguins, during their lifetime, swim the equivalent of going around the planet 12 times. They show us how connected we all are. Penguins face all the main issues of the oceans: fisheries, pollution, climate change, oil. We find soda bottles from China in Patagonia. Of course, people love penguins, but what do we do with that? There has to be more than just love and admiration and a moment of entertainment. There are so many things we can do: donations, organizing events, talking to your peers or your children about the ocean and conservation. Through penguins, we benefit the oceans.

Advertisement

Help us tell Canada’s story

You can support Canadian Geographic in 3 ways:

Related Content

2019 Rolex Awards for Enterprise laureate Miranda Wang

Science & Tech

Canadian molecular biologist honoured at 2019 Rolex Awards for Enterprise

25-year-old entrepreneur Miranda Wang recognized for her work on developing a system to recycle previously unrecyclable plastic

  • 750 words
  • 3 minutes
Dayo, an African penguin, sits on a tabletop where actress Taylor Thorne, in character as Taylor West, is completing homework

People & Culture

What it was like to work with penguins on the set of Northern Rescue

Meet the avian stars of Northern Rescue, the new family drama from CBC and Netflix 

  • 602 words
  • 3 minutes
A female scuba diver holds a light up to anemones during a night dive

Exploration

Canadian diver named 2019 North American Rolex Scholar

Meet Neha Acharya-Patel, the first Canadian recipient of the prestigious Rolex scholarship from the Our World Underwater Scholarship Society

  • 643 words
  • 3 minutes

Wildlife

Up close with the penguins of the Arctic

What Wildlife Conservation Society Canada scientists discovered after examining a colony of thick-billed murres in Cape Parry, N.W.T.

  • 876 words
  • 4 minutes
Advertisement
Advertisement