Ivan Nekhaev, a postdoc at St Petersburg University, studied snails of the genus Boreocingula — tiny gastropods as small as half a centimeter — and first discovered that Arctic micromolluscs can show signs of pseudohermaphroditism. Boreocingula martyni adult females grow underdeveloped male genital organs.
Source: EurekaAlert, https://www.eurekalert.org