20/10/2025
Our local orcasโฆ and Happy Menopause Day! ๐
Today is World Menopause Day, and did you know that menopause is incredibly rare in the animal kingdom? In fact, only a few species of mammal are known to experience it - and they're nearly all cetaceans! (Humans and some chimpanzees are the only other mammal confirmed to experience menopause!)
**THE MENOPAUSE CLUB:**
๐ Killer whales
๐ Short-finned pilot whales (and possibly long-finned pilot whales too)
๐ฌ Narwhals
๐ฌ Beluga whales
๐ฌ False killer whales possibly
๐ฉ๐ผ๐ป ๐พ๐ฏ๐?
The leading scientific theory is the "๐๐ง๐๐ฃ๐๐ข๐ค๐ฉ๐๐๐ง ๐๐ฎ๐ฅ๐ค๐ฉ๐๐๐จ๐๐จ". Older females stop reproducing but continue to play vital roles in their pods:
๐ต ๐๐ง๐จ๐ฐ๐ฅ๐๐๐ ๐ ๐ค๐๐๐ฉ๐๐ซ๐ฌ: Post-reproductive females, particularly in killer whales, act as repositories of ecological knowledge. They lead their pods to feeding grounds, especially in lean years, and their experience is crucial for survival.
๐ ๐๐๐ซ๐ข๐ง๐ ๐๐จ๐ซ ๐ญ๐ก๐ ๐๐๐ฆ๐ข๐ฅ๐ฒ: They help raise their grandchildren and other young in the pod, increasing their offspring's chances of survival.
๐ ๐๐ฎ๐ฅ๐ญ๐ฎ๐ซ๐๐ฅ ๐ญ๐ซ๐๐ง๐ฌ๐ฆ๐ข๐ฌ๐ฌ๐ข๐จ๐ง: They pass on hunting techniques, migration routes, and social behaviours to younger generations.
In killer whale society, older matriarchs are the glue that holds pods together. Studies have shown that when a post-reproductive female dies, her adult sons face significantly increased mortality risk - demonstrating just how vital these experienced females are!
Right here in Orkney waters, we're privileged to see killer whale pods that include these wise matriarchs. The knowledge they carry about our local waters, feeding grounds, and seal populations has been passed down through generations.
On World Menopause Day, we celebrate not just human experience, but the remarkable evolutionary strategy that makes older females so valuable to their communities - both human and cetacean! ๐
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