Related Clues:
- Fish tank organism
- Study in multiplication and division?
- Kelp, for one
- Minuscule creature
- It doubles in division
- Rootless water life
- Biology 101 protozoan
- Microscopist's sighting (Var.)
- Pool microorganism
- Tiny pond organism
- Bit of aquarium growth
- Amorphous organism
- Lab-slide subject
- Simple animal
- Bio 101 subject (Var.)