any species of shark that rarely comes to the surface, esp. the spinous shark (Echinorrhinus spinosus).
| 单词 | θ36692 | 
| 释义 | the world > animals > fish > subclass Elasmobranchii > order Pleurotremata > 			[noun]		 > echinorrhinus spinosus (ground-shark) (1)		 ground-shark1834 any species of shark that rarely comes to the surface, esp. the spinous shark (Echinorrhinus spinosus). | 
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