Galema's first call-up for the national team was for the 2012–13 Hockey World League Semifinal in Rotterdam. Galema was a part of the Dutch squad which won a bronze medal at the 2013 European Championship and a silver medal at the 2014 World Cup. After 2017, he was not called up for two years but he returned in the national team for the 2019 FIH Pro League. In June 2019, he was selected in the Netherlands squad for the 2019 EuroHockey Championship. They won the bronze medal by defeating Germany 4–0. In December 2020, he was dropped from the national team's training squad for the 2020 Summer Olympics.