One of the mysteries of the English language finally explained.
A marine echinoderm having a spherical or flattened shell covered in mobile spines, with a mouth on the underside and calcareous jaws.
- ‘The inner shell of a sea urchin is a hollow globe, scored in five curved sections that taper at the ends into a small hole at the top and bottom.’
- ‘The red sea urchin's body is domed above and flat below.’
- ‘The sea urchin occupies an important evolutionary position with respect to vertebrates and humans.’
- ‘This sea urchin defends itself with two sets of mobile spines.’
- ‘The sea urchin is one of the few marine organisms whose genome has been sequenced.’
Top tips for CV writingRead more
In this article we explore how to impress employers with a spot-on CV.