Induction and culture of filaments and seedling were conducted in sea weed Scytosiphon lomentaria.The filaments were developed into clusters of 1-2 cm in diameter through the induction and incubation.Massive crusts were yielded from the proliferated filaments and zoospores were released from the mature crusts at 10 ℃ and 15 ℃.The juveniles with the length of 0.5-1.0 cm adhered on vinylon strings were obtained in 35 day indoor culture at 10 ℃,indicating that this method provides a new way for nursing the see...