Pacific coast of USA, California, Albatross sta. 4423, off San Nicolas Island ('from San Diego, Cal., through Santa Catalina and Santa Barbara, E. Point San Nicolas Island, S. 7.6 miles'; geocoordinates not provided, but estimated to be approximately lat. 33.182636º, long. -119.319507º); gray sand, black pebbles, shells; 216-339 fathoms (395-620 m)