- Assistant professor marine science University South Florida, St. Petersburg, 1967-1969. Assistant professor zoology University Maine, Orono, 1969-1970, assistant professor oceanography, Walpole, Maine, 1970-1972, associate professor, 1972-1979, professor, 1979-1981, chairman, 1976-1979, professor zoology, Orono, since 1981.
Editor Polar Biology, since 1981. Field party and expedition leader National Science Foundation, Southern Ocean and Antarctica, 1962-1963, 64, 66, 67, 75, 76. Contributor articles to professional journals.
Grantee National Science Foundation, 1962-1979. Mountain named in his honor United States Advisory Committee on Antarctic Names, 1964.