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Project Noah Nature School
Squalus acanthias
The spiny dogfish has dorsal spines, no anal fin, and white spot along its back. The caudal fin has asymmetrical lobes, forming a heterocercal tail. The species name acanthias refers to the shark's two spines.
It is found mostly in shallow waters and further offshore in most parts of the world, especially in temperate waters.
Spotted on Jul 27, 2012
Submitted on Jul 29, 2012
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Small shark