"While the blue-ringed octopus is about the size of a golf ball and its glowing rings are pretty, they are one of the deadliest animals on the planet. Flashing their blue rings when danger occurs, blue-ringed octopuses are armed with a powerful toxin--tetrodotoxin. These critters are unique in that they are both venomous and poisonous! Readers get the chance to see these amazing animals up close without worrying about getting bit. The text is packed with fascinating facts about these fearsome marine creatures, and addresses numerous topics essential to the elementary science curriculum"--
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