A spokesman for the working group said a red tide was observed the day before yesterday ( march 7 ) at deep bay near the coast from ha pak nai to lan kok tsui by staff of the environmental protection department 该工作小组发言人表示，环境保护署职员前日（三月七日）在下白泥至烂角咀沿岸的后海湾发现红潮。
