Complex sentence: Spirulina is a cyanobacterium that can be consumed by humans and other animals; there are two species, "Arthrospira platensis" and "Arthrospira maxima".
Split into simpler sentences: Spirulina is a cyanobacterium that can be consumed by humans and other animals. There are two species, "Arthrospira platensis" and "Arthrospira maxima".