Eucheumatoid cultivation continues to expand with a variety of methods that can increase production. This chapter will discuss an innovation in seaweed cultivation of the genus Eucheuma, which is the prime marine commodity in the tropical regions of the world. Research conducted during 2015-2017 and 2019 in Southeast Sulawesi Province, Indonesia, provided an overview of the use of floating cage that showed very significant growth results. The research result showed that the growth rates of Eucheuma denticulatum and Kappaphycus alvarezii in floating cage seemed faster and resulted in better thallus morphology. Daily production of E. denticulatum and K. alvarezii that were cultivated in floating cage was higher than daily production of E. denticulatum and K. alvarezii cultivated on longline. Specific growth rate (SGR) of E. denticulatum and K. alvarezii cultivated by using floating cage method was also higher than E. denticulatum and K. alvarezii cultivated by using longline method. Moreover, the cultivation by using floating cages produces good growth rates with no effect of herbivore attacks.