" 《everyday post 》 in England cites a beautiful national prestige Si Kang star-wheat on the 26th Di lousy professor of the university and this time research representative director Pu Pa ·the uncle of Ji Er especially of the words report

The sea urchin is a kind of familiar marine life, extensively distribute in the world-wide locations waters.They take Zao and the ocean small living creature as a food and like to dwell for rest the rock that enriches in the seaweed to sew and the neritic district of strong and tough sand mire quality.
The sea urchin is made use of five white chis of a people is machine central position to grate rock and create for oneself a small den to avoid wave impact or enemy is aggression.Always, how does the sea urchin let the tooth is placed in the interest that the sharp status arouses a scientist forever.
"The tooth of sea urchin can grate rock, " 《everyday post 》 in England cites a beautiful national prestige Si Kang star-wheat on the 26th Di lousy professor of the university and this time research representative director Pu Pa ·the uncle of Ji Er especially of the words report, "but they can beat to whet by one is own, this ratio any we know with use of incise or beat a grinder to have to all have to be severe."