| 释义 |
Definition of heart urchin in English: heart urchinnoun 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 Example sentencesExamples - 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.
- So the heart urchin is considered to be secondarily bilaterally symmetrical.
- This species of heart urchin is found throughout the Indian and Pacific Oceans, from Mauritius to the coast of Central America.
- 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.
Definition of heart urchin in US English: heart urchinnounhärt ˈərCHən 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 Example sentencesExamples - So the heart urchin is considered to be secondarily bilaterally symmetrical.
- 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.
- 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.
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