Officials warned people not to fish, whalewatch, bathe or practise water sports while the alert was in place.
官员警告人们在警报仍然生效的时候不要捕鱼， 观看鲸鱼，海水浴或进行水上运动。
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The data comes from ecotourism companies which run expeditions to watchwhale sharks and swim with them in Ningaloo Marine Park off the north-west coast.