Researchers studying spiny dogfish, Gulf of Maine's mini shark

For such a small shark species, there seems to be super-sized confusion about its population status. But for researchers at the University of New Hampshire, one thing is clear - definite changes have occurred to spiny dogfish shark populations in the past two decades.

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<p><a href="http://www.physorg.com/news154695604.html">Researchers studying spiny dogfish, Gulf of Maine's mini shark</a></p> <p>For such a small shark species, there seems to be super-sized confusion about its population status. But for researchers at the University of New Hampshire, one thing is clear - definite changes have occurred to spiny dogfish shark populations in the past two decades.</p>