New research has begun to lift the lid on the global online trade in land crabs, leading scientists to call for closer monitoring and regulation to better understand any effects it may be having on native populations and global biodiversity. The study, published in Oryx, highlights how the tropical aquatic aquarium trade, a multimillion-dollar industry, has evolved to include sales of both hermit crabs (anomurans) and true crabs (brachyurans), growing significantly in popularity over the last two decades.

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