SPM Physics-AHA! Nature’s Physicists — Crabs in Action

 

At the school field, students panic when crabs invade during the full moon. But this comic reveals the physics truth: The Moon’s gravity creates spring tides, giving crabs a shorter, safer journey to release their eggs at sea. Formula reminder: 

$F=G\frac{m_1{m}_2}{r^2}$.

Nature doesn’t study physics — it lives it. Crabs time their migration with celestial mechanics, showing how biology and physics are deeply connected. Quick Fact: Mary Rathbun (1860–1943), one of history’s most famous crab experts, described over 1,000 new species of crabs and became a pioneer in marine zoology. Her work laid the foundation for understanding crustacean diversity worldwide.

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