Swimming with humpbacks in Tonga

A two-week-old humpback learns buoyancy, floating up beyond her mother like a helium balloon
A two-week-old humpback learns buoyancy, floating up beyond her mother like a helium balloon

I remember coming home from grade school and finding that the National Geographic had arrived in the mail. This National Geographic issue was different. Between the pages of photos and text, it contained a flexible vinyl record.

We had a small record collection, one album was Nana Mouskouri and another was ABBA’s Greatest Hits, which I bought with my first babysitting money. But this National Geographic record was not of a band or a musician, but of a recording of whales.

“Whales sing,” my dad confirmed. When my dad was a merchant marine in South America in the late-1940s, he shuttled oil from Venezuela to Curacao’s refinery. He’d hear them through the hull of the ship.

I spent the weekend sprawled out on our gold shag carpet, reading the article on the songs of the humpback whale and listening to the vinyl over and over. It was haunting, beautiful, slow and mournful.

Mother humpback directs her calf to the surface for a breath

We humans share a common ancestor with whales that goes back 60 million years. Cetaceans, the whale taxonomy class, started out on land and moved to live in water full time; whereas we humans started out in the water and moved onto land, maintaining our mammalian dive reflex. Where whales and humans crossed paths as they entered the water and we exited, there may have been an exchange of communication – with the humpback whale specifically. Humans and humpbacks are the only animals, as far as we know, to come up with new sequences of songs over our lifetime.

But maybe more interesting is the non-novel sequences of humpback whale songs that appear today. Just as I can recognize a K-pop cover of ABBA’s Super Trouper, with its English-Korean difference compared to the original English-Swedish version, there are contemporary recordings of humpback whale songs in Hawaii that are the same sequence of sounds from the 1970s recording that was made in Puerto Rico and distributed by National Geographic.

Let that sink in for a minute.

Humpback whales share songs over space (the Australian tribe seems to be the greatest hits makers) and time (decade-long gaps and then songs are resurrected like beloved vinyl we find in the attic). Just like ABBA hits, songs are shared by tribes of humpbacks across oceans and handed down to generations, resurrected as an oral tradition of a culture. This theory blew my mind – whales have culture.

A month-old humpback with his mother gains 60 kilos a day, fattening up before migration to Antarcticathe perspective of this photo is off a bit, she is twice the size of the T-Rex in the Royal Ontario Museum, more than 15m and 40 tonnes. Photo by Hamutal Bichnick @hamutravel

In the northern group of islands of Vava’u in the Kingdom of Tonga, humpback whales migrate up from Antarctica to calve and mate. Antarctica has an abundance of food in the Southern hemisphere’s summer but the winter is spent in Tonga where it’s warm but there is relatively little food. A humpback cow will give birth and nurse for 5 months, losing a quarter of her body weight before arriving back in Antarctica with a strong, fat calf.

Being in the water with a cow and calf takes some mettle. The seas are choppy, the water colder than I’d like. Slipping off the back of the whale tour boat and paddling in their direction is like being introduced to a graceful giant in an immersive children’s book – you completely suspend any belief that you’re able to anticipate what comes next. I’m in her world, she has a baby, she is not a bear, I think to myself.

I want her to see me at all times so she doesn’t inadvertently drown me somehow. But she knows exactly where I am relative to her calf because she has exquisite directional hearing. She’s silent and resting. The calf is about a month old and has mastered his buoyancy enough that he can drop down below her to nurse, and direct himself upwards to breathe. After a while, he takes a tour beyond his mother and tracks past me and Ian, curious but confident that his mom is right behind him. She seems to communicate with him somehow and moves past me, re-establishing a safe distance between us and her calf.

The chilled-out humpback mother moves slowly and deliberately between us and her now-too-curious calf
The chilled-out humpback mother moves slowly and deliberately between us and her now-too-curious calf

Beautiful footage of all of this and swimming with competing males singing was captured by Mike Bhana, videographer for Netflix, and should appear in an upcoming episode of Saving Oceania. I’ll keep you posted.

Special-permit-carrying videographer Mike Bhana dives below the mother and calf for the upcoming series Saving Oceania on Netflix
Videographer Mike Bhana films clips for the upcoming series Saving Oceania on Netflix
The intrepid sailors Sue and Brian just completed their 23-year-long circumnavigation - their key to life is "just say yes to everything". Brian and Sue sitting atop the whale watching boat, humpback whale breaches in the distance.
View from the top deck of the modern whaling boat. We all help in spotting whales as they make their position known with flukes, fins, blows and breaching. The intrepid sailors Sue and Brian just completed their 23-year-long circumnavigation on SV Sea Rose – their key to life is “just say yes to everything”.
Curious one-month-old baby humpback

7 responses to “Swimming with humpbacks in Tonga”

  1. Ann you write well, and this is a fascinating article. I found your analogy to learned favourite songs compelling. Your article may well inspire a new generation of readers on a par with the National Geographic contributors of your childhood.

  2. Great write up and your photos are so professional! You’re brave – I don’t think I’d have the guts to swim so close to such huge creatures. Looking forward to more photos and stories!

    1. Thanks, it was pretty incredible and unforgettable

  3. Bonjour Ann et Ian,
    Nous nous sommes rencontrés aux Marquises en septembre 2022 dans la baie des vierges…
    Suis heureux de vous lire, at least ! J’espère que vous allez bien.
    Les Tonga donnent envie. Nous en ce moment aux Tuamotu avec une nouvelle grand voile à récupérer à Tahiti. Quelles sont vos prochaines destinations ? Ou avez vous prévu d’aller pendant la saison cyclonique ?
    A bientôt j’espère,

    Cyril. Bateau Mojita (coque bleue, visible sur une de vos photos. Baie des vierges)

    1. Salut Cyril – Ian est en route pour la Nouvelle-Zélande, il vous enverra un message après son arrivée 🙂

    2. Allo ! c’est Ann et Ian sur Afrikii. Nous sommes à Port Vila, tu veux qu’on se retrouve pour un apéritif ce soir ?

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About Us

Yo! It’s Ann and Ian on our 1984 Wauquiez Amphitrite. Photos & blog by Ann, keeping us afloat and moving forward by Ian.

Of interest

Great podcast from Outside Magazine about military parajumper training in breath holding

See this story of Cook Islanders shipwrecked on Minerva Reef in 60s (film coming soon)