Marine reserves belong to MPAs and they are defined as: Marine Protected Areas permanently closed to all fishing and other extractive uses with limited exceptions for research and education by permit 
There are also other definitions with many different terms that have been used to describe marine reserves although the terminology seems to be very confusing to scientists and the society as well. Other common terms used to describe marine reserves include: no- take areas, nonconsumptive areas, fishery reserves  marine ecological reserves, sanctuary preservation areas  research natural areas 
- Ballantine, W.J., 1997. “ No-take” marine reserves networks support fisheries. Pages702-706 in Hancock, D.A., Smith, D.C., Grant, A., and Beumer, J.P., editors. Developing and sustaining world fisheries resources: the state and management, 2nd world fisheries congress proceedings. CSIRO Publishing, Collingwood, Australia.
- PDT (Plan Development Team). 1990. The potential of marine fishery reserves for reef fish management in the U.S. southern Atlantic. Snapper-grouper plan development team report for the South Atlantic Fishery Management Council. NOAA Technical Memorandum NMFS-SEFC-261.
- USDOC (U.S. Department of Commerce). 2000 Strategy for stewardship: Tortugas ecological reserve final supplemental environmental impact statement/final supplemental management plan. National Oceanic and Atmospheric Administration, National Ocean Service, Office of National Marine Sanctuaries, Silver Spring, Maryland.
- Brock, R. and Culhane, B., 2004. The no-take research natural area of Dry Tortugas National Park (Florida): wishful thinking or responsible planning? Pages 67-74. in Shipley, J.B., editor. Aquatic protected areas as fisheries management tools. American Fisheries Society, Symposium 42, Bethesda, Maryland.), and sanctuary, outside the USA.