0.3 miles, 270º T from the US-Mexico Border Monument, San Diego County, California, USA, Southern California Bight, NE Pacific, R/V Velero IV Sta. 6421-59 (32º32'00''N, 117º07'30''W; provided geocoordinates slightly displaced southwards, corrected here to 32.5344, -117.1279); 5.4 m, coarse gray sand