A large depression centred around the Bermuda rise at about 85° W and 30° N in the western North Atlantic Ocean. It includes the Sohm Abyssal Plain to the northeast, the Hatteras Abyssal Plain to the west, and the Nares Abyssal Plain (or Nares Deep) to the southeast. Other prominent features in this basin include the Vema Gap, the Blake-Bahama Outer Ridge, and Blake-Bahama Basin and the Puerto Rico Trench.