The existence of an 8 fathom (15 m) shoal charted near 23 ¿N, 86 ¿W, a deep water position which is in the vicinity of the Yucatan Current's historical axis, was investigated using in situ and remotely sensed data. Satellite visible data (0.4 mm--0.7 mm) were used to search for bottom reflections as well as topographically induced sea surface reflection patterns; no evidence was found in either technique. Satellite infrared data (10.5 mm--12.5 mm) and shipboard bathy-thermograph data were used to search for a thermal manifestation of turbulence downstream of 23 ¿N, 86 ¿W; again no evidence was found. The satellite infrared data were also used to identify water masses in the bathymetric survey area for the purpose of defining echo sounding correction zones. Corrected echo soundings in the vicinity of 23 ¿N, 86 ¿W vary about 2% in cross-line comparisons but show no soundings less than 900 m.