The basket trap. (IMAGE) University of Tokyo Caption These algae are only 10 micrometers in size. They use two flagella at the front to move, similar to a swimmer’s breaststroke, which made fixing them in traps without inhibiting their movement a challenge. The team experimented with four different-sized structures before selecting this final one. Credit 2024 The Shoji Takeuchi Research Group at the University of Tokyo Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.