Sydney tops nation's transport costs
![null](/web/20170426081848im_/http://www.smh.com.au/content/dam/images/4/j/l/h/0/image.related.wideLandscape.220x124.4jlgz.png/1493100397137.jpg)
- Video duration
- 00:41
Southern Cross University researchers have uncovered the collector sea urchin's incredible attack mechanism.
Save articles for later.
Subscribe for unlimited access to news. Login to save articles.
Return to the homepage by clicking on the site logo.