We wouldn't want to be alone with this guy in a dark alley — or in the dark waters of Maryland.

A tuna trolling adventure in Ocean City this month captured this mako shark on a Gopro HD Hero 3 black. It just goes to show you how fast these creatures are — this one was keeping up at six to seven knots.

Have you ever had a close encounter with large marine life?

More Manic Monday Videos:

shark

Written by: Lauren DeVlaming
Lauren de Vlaming is the senior engagement manager at Dominion Marine Media, including boats.com, YachtWorld and Boat Trader. She has a communications background including emphases in social media, journalism, and graphic design, and is also a contributor to the ebook "The Atlanta 50: What to see and do."