When it comes to mussels, bigger isn't necessarily…
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When it comes to mussels, bigger isn't necessarily later. Tiny fibers called byssals enable mussels - the shellfish kind - to anchor themselves to coastlines despite crashing ocean waves. But new research demonstrates that the attachment fibers weaken in warm water. A temperature rise of 15 degrees Fahrenheit lessens fiber length by 60 percent, possibly causing them to fail completely. As climate change raises ocean temperatures, mussels may be forced to cooler liquid. Emily Carrington of the University of Washington conducted the research at the meeting of the American Association for the Advancement of Science in Boston: "Researchers have dissected mussel beds and found, I think, upwards of 100 great species. So if the mussels go it really changes that community. "We also eat mussels and so there's applications in aquaculture. The way they grow mussels, is the mussels have to use attached to the ropes on their long lines. So if the mussels fall off before the farmers return to reap their harvest, then they've lost a lot of money."
Opens question #191091 in the RealPTE practice screen.
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Highlight Incorrect Words format (Pearson)
| Prompt | Recording of 15–50 seconds |
|---|---|
| Time to answer | Not set per question (Part 3 lasts 31–39 minutes) |
| Skills assessed | Listening, Reading |
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- Each correctly clicked word earns 1 point; each wrong click loses 1 point.
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Source: Pearson, PTE Academic & UKVI test format, Part 3: Listening, checked 9 October 2026.