d852fe53 a30c 4b30 aebf 47e8376d5122 Published on February 8, 2019 in Plankton Fantastic! Professor Humphries showed STEM club how small things move in a liquid.Full resolution (1707 × 1138) ← Previous Next → d852fe53 a30c 4b30 aebf 47e8376d5122