A harvesting system for harvesting aquatic plants in or floating on a culture medium a harvesting bed configured to be circulated in and out of the culture medium. An actuator circulates the harvesting bed, a scraper positioned against a surface of the harvesting bed scraps the aquatic plants on the harvesting bed and a channel transports the aquatic plants removed by the scraper toward a collection vat. The collection vat receives the aquatic plants transported via the channel.