8 Flower Urchin-shutterstock_317153549.jpg

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Also called Toxopneustes; the flower urchin is one of the most frequently encountered sea urchins. It is also said that they hold the title of the “World’s most venomous” sea urchins, according to the 2014 Guinness Book of World Records. Their sting is painful, toxic, potent and poisonous.