Sand Dollars: Ocean Treasures or Hidden Coins? 🌊💫

Описание: Think you’ve found a coin on the beach? Think again! 🪙 This is a sand dollar, a fascinating sea creature closely related to starfish and sea urchins. Alive, they come in vibrant colors and are covered in velvety spines. After death, their skeletons turn white and become smooth and brittle. Inside, they have a unique jaw structure called 'Aristotle's lantern,' with parts that look like doves.
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