Animals
Toothed whales use their noses to whistle and click
Much as people do, toothed whales, such as dolphins and sperm whales, make noises in three different vocal registers.
Oceans
Science News for Students articles on oceans
More Stories in Oceans
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OceansHow would a mermaid sound underwater?
Human ears don’t work well in the water. A mermaid would need marine creature features to talk to and understand her aquatic friends.
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AnimalsMegalodons may have become megahunters by running hot
O. megalodon sharks were warm-blooded mega-predators. But when food sources dwindled, colder-blooded sharks may have had an evolutionary edge.
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AnimalsScientists Say: Coral
Over 4,000 species of fish make their home among the reefs created by these colony-dwelling marine animals.
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FossilsAncient jellyfish? Upside down this one looks like something else
A new look at an ancient sea animal called Essexella suggests it may have been a type of burrowing sea anemone, not a floating jelly.
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FossilsOcean life may have bounced back after the ‘Great Dying’
Marine ecosystems may have been back in action just a million years after the most severe extinction event known.
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EnvironmentSea life may suffer as plastic bits alter metals in water
This interplay between plastics and metals could affect how each affects the environment — and suggests opportunities for controlling their risks.
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FossilsAn ancient ichthyosaur graveyard may have been a breeding ground
Some 230 million years ago, huge dolphin-like reptiles appear to have gathered to breed in safe waters, just as many whales do today.
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EnvironmentMicroplastic pollution aids viruses and prolongs their infectivity
The tiny plastic bits give these germs safe havens. That protection seems to increase as the plastic ages and breaks into ever smaller pieces.
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ClimateGreenland’s inland ice is melting far faster than anyone thought
Inland melting of the Northeast Greenland Ice Stream is accelerating — and may contribute far more to sea level rise than earlier estimates suggested.