Roughly half are killed by whalers from Japan, mostly off Antarctica; the cull is permissible, Japan says, because it amounts to "scientific" rather than commercial whaling.

其中约有一半是被日本捕鲸者从南极洲捕杀的；日本方面声称捕杀活动是可被容许的，因为这是“科学性质的”捕鲸，而非商业性质。

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And with treating bats with fungicide or a mass cull an impossibility because of the sheer numbers involved, a solution is a long way off.

BBC: White-nose syndrome: Bats hit by killer disease

Efforts to cull the starfish have had some success, but a better approach would be to reduce agricultural run-off and thus cut the banquet enjoyed by the larvae.

ECONOMIST: The Great Barrier Reef: Dr De��ath v the killer starfish | The