This is the terrifying moment a thirty-foot basking shark hit a fishing boat off the coast of Portland, Maine in the USA.<br /><br />In the clip, which was filmed on June 10, the enormous shark swims directly at the boat and then hits it with a loud crash.<br /><br />"We were jigging for mackerel when we saw a large dorsal fin coming towards our boat," the filmer Dustin Beamon wrote online.<br /><br />"We were just thinking it was going to be your typical shark until it got closer and we saw the size of it and our first thought was that it was a great white," Beamon said.<br /><br />"Our boat is 22 feet long and this basking shark was at least 10 feet longer than our boat, it could have easily capsized us," he added.<br /><br />"As it swam under our boat it bumped it, knocking almost everyone in the boat off their feet."<br /><br />Basking sharks are the second largest fish in the world after the whale shark. Despite their huge size, they are placid filter feeders and do not attack humans.<br /><br /><br /><br /><br /><br />++CLIENTS PLEASE NOTE: THIS VIDEO HAS BEEN LOOPED++
