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Oceanographer and professor emeritus Martin Johnson (man in white brim hat) of Scripps Institution of Oceanography conducting a dredging trip off Pt. Loma for his marine biology class aboard the E.W. Scripps. Johnson was particularly well known as one of the three authors of the landmark text and reference, The Oceans: Their Physics, Chemistry and General Biology. 1948.

Oceanographer and professor emeritus Martin Johnson (man in white brim hat) of Scripps Institution of Oceanography conduct...