A brief presentation on the current state of sustainable marine microalgae cultivation for the aquaculture industry. Tomalgae BV, Dienze, Belgium, has pioneered the field of diatom breeding and produces in raceway ponds a high-quality freeze-dried feed for shrimp and bivalve hatcheries. The company works with Reed Mariculture Inc and others on the distribution of this product and with MicroBio Engineering Inc. on research and product development.