July 26, 2025

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Clownfish surprise scientists by shrinking to cope with ocean heat

Clownfish surprise scientists by shrinking to cope with ocean heat

Summary

Clownfish, known for their bright orange and white stripes, have been found to shrink in size during marine heatwaves. This size change helps them survive rising ocean temperatures, a phenomenon observed in a study conducted in Kimbe Bay, Papua New Guinea, during 2023.

Key Facts

  • Clownfish are widely recognized due to their appearance in the film "Finding Nemo."
  • A study showed clownfish became smaller during heatwaves in 2023.
  • The study was conducted in Kimbe Bay, Papua New Guinea.
  • Researchers found that clownfish lost weight and became shorter.
  • 75% of the clownfish studied shrank at least once during the heatwave.
  • Shrinking helps the fish survive by needing less food and oxygen.
  • This response to heat is similar to changes seen in other animals due to climate change.
  • The study's findings were published in the journal Science Advances.

Source Information