sand shark
noun
1- a voracious brown-spotted shark of tropical Atlantic waters沙鲨。
1.1
- Odontaspis taurus, family Odontaspididae.拉丁名Odontaspis taurus,锥齿鲨科。
1.2
- any of a number of mainly harmless rays, dogfish, and sharks found in shallow coastal waters（浅水海域的）鳐; 狗鲨; 鲨。