Algae, A.K.A. Experiment 539, is an illegal genetic experiment created by Jumba Jookiba. She is designed to make harmful algae blooms grow on ponds.
Experiment 539 was the 539th genetic experiment created by Jumba with Hämsterviel's funding. She was designed to make harmful algae bloom grow on ponds.
539 and the other first 624 experiments were deactivated and smuggled to Earth by Jumba during his mission to capture Experiment 626.
All of the experiment pods were released and scattered across the island of Kauai.
At the unknown point, she was activated, captured, tamed and named Algae.
- Algae is seen in her pod form in Stitch! The Movie.
- Algae's pod color is blue.