This Day in History: 1896-04-07

Sheina Marshall (1896 – 1977) died on this day.
She was a Scottish marine biologist and an authority on copepods. Marshall worked at the Scottish Marine Biological Association’s research station at Millport (retiring as Deputy Director), on the island of Great Cumbrae in the Firth of Clyde helping to establish it as a leading centre for research into plankton and the marine food chain. In 1927 she participated in the Great Barrier Reef Expedition led by Sir Maurice Yonge. During the Second World War she researched ways of obtaining agar from seaweed, needed for the production of vaccines. Marshall was one of the first women to be admitted to membership of the Royal Society of Edinburgh (1949), and later became a member of the Royal Society of London.

Marshall is honoured in the name of a species of copepod, Calanus marshallae.