Annual California sea otter census - 2019 spring census summary
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The spring 2019 mainland sea otter count began on May 1 and was completed by July 9. Overall viewing conditions this year were very good, better than those...
2019年春季大陆海獭种群计数工作于5月1日启动，至7月9日全部完成。本年度整体观测条件极佳，优于往年……
