A remarkable encounter on Western Australia's Murchison River has captivated millions online, after a tour boat operator filmed four emus swimming across the waterway near Kalbarri — a sight so unusual it left both tourists and seasoned river guides stunned.
The footage, shared on social media, has now clocked more than 5 million views, with viewers around the world marvelling at the birds' long necks bobbing above the waterline as they made their crossing.
Right Place, Right Time on the Murchison River
Tracy Grosvenor, who owns and operates Kalbarri Cruises alongside her husband Grant, was running a regular tour on the river when she spotted something unusual in the distance.
"We were probably nearly at the turnaround point, and in the distance, we can see these little black shadows crossing the river, and we didn't know what they were," Ms Grosvenor said.
"So, we quickly zoomed up and there were four emus fully swimming across the Murchison."
The emus crossed approximately 70 metres of open water before reaching the far bank. Ms Grosvenor described the moment as a once-in-a-career sighting — despite she and her husband having run tours on the river for more than 14 years.
"We've seen many emus along the river edge," she said, "but it is the first time we have witnessed them swimming."
"It was just right place, right time to capture it on footage."
The reaction aboard the tour boat was immediate and enthusiastic. Passengers rushed to the front of the vessel to get a better look, with Ms Grosvenor noting the boat "tipped nose down" as everyone scrambled forward.
Loch Ness Comparisons Flood Social Media
Online, the video quickly drew an unexpected pop-culture comparison. The sight of the emus' heads and long necks gliding above the surface prompted a wave of comments referencing the legendary Scottish sea creature.
"I know people have thought it's the Loch Ness Monster or swimming elephant trunks," Ms Grosvenor said, noting the reaction took her by surprise.
The Murchison River, WA's second-longest waterway at around 800 kilometres, is a recognised haven for wildlife and supports hundreds of bird species — though emus swimming its width is, apparently, an uncommon spectacle even for those who know it best.
Emus Are Actually Strong Swimmers, Experts Say
While the footage was a first for many viewers, a Geraldton-based wildlife carer and vet nurse says swimming is not unusual behaviour for Australia's largest bird.
Jaydene Bartley said emus are well-adapted to moving through water, particularly during WA's scorching summer months when temperatures in the state's north regularly exceed 40 degrees Celsius.
"These guys love going through the water and having a good bath," Ms Bartley said.
"They have such heavy down underneath their feathers that it helps keep them cool throughout summer in particular and then aids in the cleaning for them."
Ms Bartley said while the behaviour is most frequently observed in WA's northern regions, it can occur right across the state wherever water is available.
"However, it is seen throughout [the state] when there are puddles of water around," she said.
Beyond bathing, the crossing serves a practical purpose. Emus are nomadic animals that must travel across varied terrain to find food, and a wide river is no barrier when resources are scarce.
"Their food is sparse throughout. They have to sort of be able to travel across the river to get food, particularly when it's warmer days like this," Ms Bartley said.
For visitors to the Kalbarri region, the encounter was an extraordinary bonus — a reminder that wildlife encounters in Australia's remote northwest can be just as spectacular as anything found at more well-known tourist locations around the country. As for Ms Grosvenor, after 14 years on the Murchison, she says she never expected an ordinary afternoon cruise to turn into a viral moment watched by millions.
