Captain Barnacles is a character from the animated children's television series The Octonauts. He is a brave and adventurous polar bear who serves as the leader of the Octonauts, a team of animals dedicated to exploring the ocean and helping sea creatures in need. Captain Barnacles is known for his strong sense of duty and teamwork. In the series, Captain Barnacles often leads his crew on exciting missions, using his problem-solving skills and courage to overcome challenges. He is easily recognizable by his blue uniform and captain's hat, embodying the spirit of adventure and exploration that defines the Octonauts team.