Algae in BioSphere
Glow-in-the-dark algae (200 ml) in a BioSphere bottle. The species is Pyrocystis lunula.
Glow-in-the-dark algae in a BioSphere bottle. The bottle is 10 cm tall and contains 200 ml algae. These algae are Dinoflagellates (species name Pyrocystis lunula) and at night they emit a blue light when you shake the bottle.
This process is called bioluminescence. More information: What is Bioluminescence?
Instructions for taking care of the algae can be found here: How do I take care of the algae?