 "Amoebophyra" is mostly known for its correlation with harmful algal blooms (HABs).Abundance of certain strains have been linked to the decline of some HABs in marine life, while others have been found to cause it.During its lifespan, "Amoebophyra" alternates between a free-swimming asexual reproductive stage called the dinospore, and a multinuclear growth phase within the host called the trophont stage.