First, the good news from the BBC: “A humpback whale has made one of the longest and most unusual migrations ever recorded, possibly driven by climate change, scientists say.
It was seen in the Pacific Ocean off Colombia in 2017, then popped up several years later near Zanzibar in the Indian Ocean – a distance of at least 13,000 km….
Ekaterina Kalashnikova of the Tanzania Cetaceans Program said the feat was “truly impressive and unusual even for this highly migratory species”…
Dr Kalashnikova said it was very likely the longest distance a humpback whale had ever been recorded travelling.
Humpback whales live in all oceans around the world. They travel long distances every year and have one of the longest migrations of any mammal, swimming from tropical breeding grounds to feeding grounds in cooler waters.
But this male’s journey was even more spectacular, involving two distant breeding grounds.” (It is worth reading the BBC article not least for the map showing the humpback’s epic 13K km+ voyage across the planet)
Now the bad news from the same source: “The experts think this epic journey might be down to climate change depleting food stocks or perhaps an odyssey to find a mate…
One theory is that climate change is altering the abundance of the tiny shrimplike krill humpback whales feed on, forcing them to travel further in search of food.
Alternatively, whales may be exploring new breeding grounds as populations rebound through global conservation efforts.”
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