Can Sand Dollars Swim?
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The creatures' five oblong holes, known as lunules and reflected in the skeletons, let water pass through them to reduce the lifting pressure of the current. The holes also let sand pass through and help them disappear into the bottom faster. When they die and wash ashore, their skeletons become works of art.
Elena Rostova holds a Master's degree in Public Health Journalism. She covers groundbreaking medical research, holistic wellness trends, mental health awareness, and nutritional science.
