<p>A US Coast Guard crew based in Boothbay Harbor, Maine, witnessed a shark swimming alongside the bow of their boat as they returned from a search and rescue mission on July 3.</p><p>The crew were around eight miles out to see when the shark swam below the 47-foot lifeboat, the coast guard said.</p><p>Speaking to local media,</a> Chief Adam Smart said the measurement was not an official one. There were 10 crew members aboard and those who responded used the length of the boat as a base for their approximation. Credit: US Coast Guard Station Boothbay Harbor via Storyful</p><br />
