 This even though Honolulu Emergency Services has labeled the shark non-aggressive. They say there have been no reports of injuries or attacks. That being said, tiger sharks are known for being extremely aggressive and have often been known to attack humans. Gary Baumgarten, Fox News. On Wall Street, stock futures are falling after gains to start July. The Dow rose 50 points. The Nasdaq surged up 146. I'm Dave Anthony, Fox News.