Answer: An area where there is absolutely no fishing allowed.
A marine protected area can be defined as protected areas of water bodies like seas, oceans, salt water lakes and estuaries. These areas restricts any kind of human activities in these regions such as water transportation, fishing and garbage or radioactive waste disposal. The purpose of the protection is to keep the water body clean and to preserve the genetic diversity of marine endangered and rare aquatic species.
An area where there is absolutely no fishing allowed denotes the marine protected area because fishing can limit the diversity of the rare and endangered aquatic species.