Seems that eating Azolla or maybe even animals feed Azolla may not be the safest thing to do: https://en.wikipedia.org/wiki/Beta-Methylamino-L-alanine https://e

Seems that eating Azolla or maybe even animals feed Azolla may not be the safest thing to do: https://en.wikipedia.org/wiki/Beta-Methylamino-L-alanine https://en.wikipedia.org/wiki/Beta-Methylamino-L-alanine The cyanobacterian symbiont of Azolla, Anabena can produce neurotoxins.