Marguerite Bay is a body of water located in Antarctica. It is situated on the western side of the Antarctic Peninsula and is part of the British Antarctic Territory. Marguerite Bay is bordered by Adelaide Island to the east and Alexander Island to the west. It is known for its diverse marine life and is a popular destination for scientific research and exploration. The nearest city to Marguerite Bay is Rothera, which is a research station operated by the British Antarctic Survey.