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Southern Right Whales Face Breeding Decline Amid Climate Change

2/12/2026

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Summary

Story summary

The breeding cycle of Southern right whales in Australia has shifted from a three-year to a four- or five-year cycle since 2017.
Researchers analyzed 35 years of data to link breeding rates to sea ice extent and marine heatwaves.
Vanessa Pirotta, a whale scientist, stressed the importance of long-term data.
Experts warn worsening conditions could reduce births and heighten conservation needs amid climate disruption.

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Story summary

The breeding cycle of Southern right whales in Australia has shifted from a three-year to a four- or five-year cycle since 2017.
Researchers analyzed 35 years of data to link breeding rates to sea ice extent and marine heatwaves.
Vanessa Pirotta, a whale scientist, stressed the importance of long-term data.
Experts warn worsening conditions could reduce births and heighten conservation needs amid climate disruption.