/tags/sand-tiger-shark sand tiger shark en-US Copyright Wed, 24 Apr 2019 13:14:07 GMT /science-technology/2019-04-24/sand-tiger-sharks-loyal-to-certain-shipwrecks-study-finds Sand tiger sharks don’t look like the friendliest bunch. They’ve got “big gnarly teeth and really thick, stout bodies,” as Hap Fatzinger of the North… Wed, 24 Apr 2019 13:14:07 GMT /science-technology/2019-04-24/sand-tiger-sharks-loyal-to-certain-shipwrecks-study-finds Laura Pellicer