Reflection seismic profiles in the deep intraplatform basin of Exuma Sound, Bahama Islands, reveal at least nine diapiric structures along the 65-km-long central third of the axis. Three of the cores recovered from the diapirs consist of unconsolidated pelagic ooze, apparently undisturbed, with intermittent compacted layers. Stratigraphic continuity is indicated best in the longest core (805 cm), whose sediments range in age from late Pliocene to the late Pleistocene-Holocene Emiliania huxleyi Zone. Graded turbidite layers are present in two other cores recovered from near the base of the diapirs. Biostratigraphic correlation is achieved by using three species of calcareous nannofossils and parameters relating to some of the more than 50 recognized species of planktonic F raminifera. Some foraminiferal reworking is apparent. The rate of sedimentation for the sections representing the post-Pseudoemiliania lacunosa intervals appears to be substantially greater than the rate indicated for earlier Pleistocene sediments.