Grey Seal

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Mammal 🦭
🦭
Grey Seal
Halichoerus grypus
Size
1.6–2.3 mAbout the length of a family sofa
Weight
105–310 kgUp to the weight of two adult men
Lifespan
25–35 years
Rarity
Uncommon
M vs F
Males (bulls) are much larger and darker with a distinctive "Roman nose"; females (cows) are smaller, paler and more slender-snouted
Habitat
Rocky coastlines, islands, offshore reefs; pupping beaches in autumn
Best time
October–December for dramatic pupping beaches; visible year-round at haul-out sites
Conservation
UK: Green LC
💡 Did you know?
The UK holds over 40% of the world's Grey Seal population — more than anywhere else on Earth, including their large colonies on remote Scottish islands
Grey Seals can slow their heart rate from around 100 bpm to as low as 4 bpm during a deep dive — a reflex called the "diving response" that prioritises blood flow to the brain and heart
Often confused with
Common Seal (smaller dog-like face spots found in sheltered estuaries)
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