Note
Research has been conducted for several years at the HarborBranch Foundation on the cultivation of seaweeds as a possiblesource of biomass that can be converted to methane or otherfuels (1,2). Of over 40 species of seaweeds examined, therhodophyte Gracilaria tikvahiae had the highest sustainedyield and can be vegetatively propagated indefinitely in anaquaculture system. Its productivity can be as high as anyterrestrial crop on earth (3).