A prominent and majestic member of the pelagic environment. With females growing to more than 2000 pounds (males are much smaller, seldom exceeding 300-400 lbs), the Blue Marlin is one of the largest bony fish and perhaps the most recognizable of the billfish. Endemic to the Atlantic Ocean, the blue marlin is also present in the tropical and subtropical waters of the Pacific and Indian Oceans. They use their bill to stun prey, feeding primarily on fish such as tuna, bonitos, flying fish, ballyhoo, and squid. They are a powerful fish and greatly sought after by sport fishermen.