A spokesman for the working group said a red tide was observed on april 30 at the sea area from pearl island to ma wan fish culture zone by staff of the government flying service and mariculturists of the fish culture zone 该工作小组的发言人表示，政府飞行服务队队员和马湾养鱼区渔户于四月三十日在龙珠岛至马湾养鱼区海域发现红潮。
