Dolphins and Whales News -- ScienceDaily

Oldest whale bone tools discovered (Tue, 27 May 2025)
Humans were making tools from whale bones as far back as 20,000 years ago, according to a new study. This discovery broadens our understanding of early human use of whale remains and offers valuable insight into the marine ecology of the time.
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Megalodon: The broad diet of the megatooth shark (Mon, 26 May 2025)
Contrary to widespread assumptions, the largest shark that ever lived -- Otodus megalodon -- fed on marine creatures at various levels of the food pyramid and not just the top. Scientists analyzed the zinc content of a large sample of fossilized megalodon teeth, which had been unearthed above all in Sigmaringen and Passau, and compared them with fossil teeth found elsewhere and the teeth of animals that inhabit our planet today.
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Climate change poses severe threat to bowhead whale habitat (Thu, 22 May 2025)
New research examining 11,700 years of bowhead whale persistence throughout the Arctic projects that sea ice loss due to climate change will cause their habitat to severely contract by up to 75 per cent.
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Surprise baby whale sightings reveal there's still much to learn about humpbacks (Tue, 20 May 2025)
Humpback whales are not always born in tropical waters, new research has shown -- challenging long-held assumptions about their breeding and migration behaviors, while raising new questions for marine conservation.
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Discovery: The great whale pee funnel moves vital nutrients (Mon, 10 Mar 2025)
Scientists have discovered that whales move nutrients thousands of miles -- in their urine -- from as far as Alaska to Hawaii. These tons of nitrogen support the health of tropical ecosystems and fish, where nitrogen can be limited. They call this movement of nutrients a 'conveyor belt' or 'the great whale pee funnel.' In some places, like Hawaii, the input of nutrients from whales is bigger than from local sources. It's critical to tropical ocean health, therefore, to protect and restore whales.
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