Akademik

ground shark
noun
1. : any of numerous active voracious sharks (genus Carcharhinus) found in shallow water along all warm coasts: as
a. : cub shark
b. : brown shark 2
2. : greenland shark

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any of various requiem sharks, esp. of the genus Carcharhinus.
[1810-20]

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ground shark,
any one of various sharks inhabiting warm coastal waters.

Useful english dictionary. 2012.