We didn’t expect it, but yesterday’s boat tour became one for the books: a Pygmy Blue Whale spotted off Tasmania’s east coast (Balaenoptera musculus brevicauda), just off the cliffs of the Tasman Peninsula.
It was one of those rare moments where time slows, and you realise you’re witnessing something few people ever will.
It began with a towering spout on the horizon. Moments later, the sleek, mottled back of a Blue Whale arched through the surface, followed by a distinctive small and upright dorsal fin – a telltale sign we were witnessing a Pygmy Blue Whale, the smaller (but still massive) subspecies of the largest animal on Earth.
The whale lingered near the boat, rolling and surfacing several times as it appeared to be feeding, possibly on krill stirred up by local upwelling. At one point, we caught a glimpse of its ventral pleats as it turned slightly on its side, a behaviour often associated with feeding.
Why are pygmy blue whales so special?
Despite the name, Pygmy Blue Whales aren’t exactly small. They can reach up to 24 metres in length and weigh more than 80 tonnes. What makes them distinct from their Antarctic cousins is not just their slightly shorter size, but their range and habits. While Antarctic Blue Whales tend to migrate through deep, offshore routes, Pygmy Blue Whales are more likely to feed inshore, particularly along the nutrient-rich areas of Tasmania’s southeast coast near the edge of the continental shelf. But even locals in the area will tell you that it is very rare and super special to see these fascinating animals.
Pygmy Blue Whales were only formally recognised as a distinct subspecies in the 1960s, and scientists are still learning about their movements, behaviour, and population size. Every sighting adds to our understanding, and moments like this remind us how important these waters are for the unique marine life.
Curious to Learn More?
If you’d like to dive deeper into the science and conservation of pygmy Blue Whales in Australia, here are some excellent resources:
- Blue Whale Study – A research initiative led by Dr. Mike Double and colleagues, focusing on Pygmy Blue Whales in Australian waters.
- Institute for Marine and Antarctic Studies (IMAS) – University of Tasmania – World-class research on marine species, including Whales in Tasmanian waters.
- Atlas of Living Australia – View whale sighting data submitted by researchers and citizen scientists.
Or if you want to read more stories like this, check out our earlier blog posts covering other Blue Whale sightings along Tasmania’s southeast coast.
Want to experience Tasmania’s marine wildlife for yourself?
Join one of our scenic boat tours to explore the towering sea cliffs, caves, and coastal ecosystems of the Tasman Peninsula. With a bit of luck, you might spot Dolphins, Seals, Albatross – or if the timing is just right, even a Blue Whale.
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