A family of large land crabs that live on tropical islands and climb trees.
From Greek 'gekos' (gecko) and 'karkinos' (crab), combined with the scientific suffix '-idae' for family classification. The name reflects early scientific observations that these crabs were believed to have gecko-like qualities.
These crabs can weigh up to 3.6 kg and are so strong they can crack open coconuts—they're sometimes called 'robber crabs' because they steal shiny objects, possibly mistaking them for food or using them to decorate their shells!
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