One of the mysteries of the English language finally explained.
A heart-shaped burrowing sea urchin which has a thick covering of fine spines on the shell, giving it a furry appearance.
Class Echinoidea, order Spatangoida
- ‘So the heart urchin is considered to be secondarily bilaterally symmetrical.’
- ‘Occasionally, unusual events or creatures are seen - massed heart urchins for example, or odd fish such as tadpole fish, red mullet, and even trigger fish.’
- ‘This species of heart urchin is found throughout the Indian and Pacific Oceans, from Mauritius to the coast of Central America.’
- ‘The sandy patches yield burrowing starfish, rare delicate tube anemones, heart urchins, peacock flounders, and many species of nudibranch and sea hare.’
- ‘Burrowing heart urchins have bands of very fine spines that are termed fascioles that help them live in fine sediments.’
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