Two marine brown algae, Cladosiphon okamuranus Tokida and Stypopodium flabelliforme Weber-van Bosse, are reported from Pratas Island for the first time.

• 摘要报告采至东沙岛两种海洋性褐藻的两种新纪录：岗村棕叶藻和扇形刚管藻，两者均为东沙岛第一次记录。