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London’s River Thames was declared “biologically dead” in 1957 due to high levels of pollution. Sixty-four years later, it is a thriving ecosystem of more than 115 species of fish and 92 species of bird. Three species of shark were detected in the river as the Zoological Society of London prepared its most recent State of the Thames report.

伦敦的泰晤士河在1957年由于高度污染而被宣布为“生物学死亡”。64年后，它成为一个拥有超过115种鱼类和92种鸟类的繁荣的生态系统。在伦敦动物学会编写其最新的泰晤士河状况报告时，该河中发现了三种鲨鱼。