Mysterious Bigfin Squid Caught ‘Walking’ on Long Arms in Rare Deep-Sea Footage

When it comes to mysterious creatures of the deep, the bigfin squid is a one-of-a-kind legend. Imagine a squid with arms that stretch several times the length of its body, gracefully “walking” across the ocean floor like something straight out of a sci-fi movie. Researchers exploring the depths of the Tonga Trench were lucky enough to capture rare footage of this elusive squid, and it’s nothing short of mesmerizing. Let’s uncover this spectacular discovery and why this creature is one of the most mysterious residents of the ocean.

A Rare Glimpse into the Abyss

During a routine exploration of the Tonga Trench, scientists stumbled upon a sight that left them awestruck: a bigfin squid leisurely making its way across the seafloor. This was no ordinary squid sighting at a depth of 10,800 feet (3,300 meters). The bigfin squid is known for being elusive, with only a handful of recorded encounters. Seeing one in action is like winning the deep-sea lottery. This sighting wasn’t planned—it was pure chance. In the deep sea, the unexpected lurks just beyond the camera’s view.

A Creature of Extremes

Bigfin squid aren’t your everyday squid—they are more like the long-lost cousins of octopuses and cuttlefish. These deep-dwelling cephalopods have some serious bragging rights. They are the deepest-dwelling squid known to science, often found at depths of more than 20,000 feet (6,100 meters). This extreme habitat makes them incredibly difficult to study. If that wasn’t impressive enough, their spindly arms can grow to extraordinary lengths, giving them a rather otherworldly appearance.

The Footage

The new footage from the Tonga Trench shows the bigfin squid “walking” along the seafloor, almost as if it’s tiptoeing through the abyss. But, no, it’s not in a rush. With arms several feet long, this squid seems to move with the confidence of someone who knows no one’s around to rush them. It even pauses, pulsing its big fins as though deep in thought—or perhaps just trying to unstick its arms from the seafloor. Either way, it’s a hauntingly beautiful moment that reminds us how little we know about the creatures lurking in the depths.

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The Mysteries of Bigfin Squid Anatomy

One look at the bigfin squid, and you’ll notice its defining feature: arms that seem way too long for its body. Scientists estimate that this particular squid’s body was only about 8 to 12 inches long, but its arms stretched several times that length, looking comically disproportionate. It’s like the squid’s body didn’t get the memo that its arms were going to have a major growth spurt. Why these squids evolved such ridiculously long arms is still a mystery, though scientists think it has something to do with their feeding strategy in the food-scarce depths.

The Feeding Habits of the Bigfin Squid

Speaking of feeding, what does a squid this strange eat? Well, in the hadal depths—where the bigfin squid resides—food is hard to come by. Most of the food down there comes from particles that drift down from above, so the squid’s long arms may help it sweep up whatever it can. It’s kind of like a vacuum cleaner of the deep, trying to gather up every bit of sustenance it can find. The footage suggests that this squid might have been trying to feed when it was caught on camera.

The Challenges of Studying Bigfin Squid

It’s not easy to study an animal that lives miles beneath the ocean’s surface, which is why bigfin squid sightings are so rare. Most encounters come from serendipitous filming during oil and gas operations or deep-sea explorations, like this one. Scientists can’t exactly send down a team of divers to observe them in their natural habitat, so we rely on chance encounters and remote-operated cameras to catch glimpses of these creatures. This footage is a goldmine for researchers, but it’s also a reminder of how much more there is to learn about life in the deep.

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The Future of Bigfin Squid Research

So, what’s next for the study of bigfin squid? The first step is to gather more footage. Scientists like Alan Jamieson, who captured this recent video, know that these encounters are rare, but the more we film, the more we’ll learn. The goal is to piece together the puzzle of how these squid live, feed, and survive in such extreme conditions. In the meantime, we’ll be keeping our fingers crossed for the next lucky encounter!

The Wonder of the Deep: Why This Discovery Matters

Every time we discover something new about the ocean, we’re reminded of how much there is still left to explore. The bigfin squid may be a strange and elusive creature, but it represents the vast, unknown world that lies beneath the waves. This footage is a rare peek into that world—a world where the rules of life as we know them don’t always apply. It’s a reminder that the ocean holds countless secrets, just waiting for the right moment to reveal themselves. And who knows what other strange creatures are out there, walking along the seafloor, waiting to be discovered?

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• About
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Esther Evangeline, MSc Zoology

Writer at Animals Around The Globe

Esther is from India; the heartbeat of South Asia, holding a Master’s degree in Zoology and a postgraduate diploma in Animal Welfare. Her enthusiasm for animal welfare drives her passion and dedication to work for animals, ensuring their well-being and advocating for their rights. With a solid academic background and hands-on experience, she is committed to making a positive impact in the field of animal welfare.In her free time, she enjoys embroidery and sewing. As a Chennaite from Tamil Nadu, Esther loves Bharathanatyam, an Indian classical dance form.

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