Symbrosia is a cleantech startup cultivating Asparagopsis taxiformis, native Hawaiian red algae, as a livestock feed material. With high potency and wide-spectrum efficacy against rumen methanogenesis, Asparagopsis is a promising natural intervention for reducing enteric methane emissions from ruminants by over 90%. State of the art facilities at the Natural Energy Laboratory of Hawai’i Authority (NELHA) are the innovation grounds for Symbrosia’s development of cultivation technologies to enable seaweed production at an impactful scale.