While at Northeastern, Mr. Gordon taught oceanography and earth science courses and published more than 150 articles on fish and the ocean. He also wrote several books, including Man and the Sea: Classic Accounts of Marine Explorations and Secret Life of Fishes. He also ran The Book and Tackle Shop in Rhode Island.
“For many years he had a boat, and he got to know the Stonington fishing fleets very well,’’ said his wife. “He used to go out on their fishing boats in the early years.’’
In 1974, Mr. Gordon and his wife collaborated on a series of children’s books on extinct animals, including There Really Was a Dodo, If an Auk Could Talk, Once There Was a Sea Cow, and Once There Was a Passenger Pigeon.
“He was an environmentalist before environmentalism was popular,’’ said his nephew, Justin, of Chicago.