And often residents are the first to discover a nasty spill or a fish kill in their area.

通常情况下都是普通的居民第一时间发现污物排放到河流里，或发现水里出现死鱼。

youdao

The cause of the fish kill has not yet been determined, but the area they were discovered in was impacted by oil from the BP oil spill.

鱼的死亡原因尚未确定，但是它们被发现的区域受到英国石油公司泄漏原油的影响。

youdao

It would make sense to give the fish enough time to recover, grow to full sizes and reproduce, then catch them in a way that doesn't kill other innocent sea life.

给这些鱼足够的时间来恢复、成长和繁殖，然后以一种不会杀死其他无辜海洋生物的方式来捕获它们，这是有意义的。

youdao

Nutrient overloads lead to low levels of dissolved oxygen in the water, which can kill fish.

WSJ: Connecticut Seaweed: Life Down on the Kelp Farm

Much is washed off by rain, ending up in local watercourses where dissolved nutrients can cause algal blooms and kill fish.

ECONOMIST: Industrial dairy farming

They kill both fish and invertebrates, irrespective of their commercial value.

ECONOMIST: What price coral?