Assertion: shorttail nurse shark | /r/AtLocation | western indian ocean
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text: For example, populations of tawny nurse sharks (N. ferrugineus, which often rest in caves and under reef escarpments) near Thailand are thought to have decreased as a direct result of blast fishing and through pestering by divers, whereas shorttail nurse sharks (P. brevicaudatum, which inhabit the western Indian Ocean) are declining because of a combination of habitat destruction, fishing, and capture as bycatch (being accidentally caught by anglers).