12月31日环球资讯：旧金山海狮从码头上消失了... 旧金山, 海狮, 码头, 环球, 资讯

beiju

San Francisco's sea lions disappear from pier
旧金山海狮从码头上消失了...

Hundreds of the animals have relaxed on San Francisco's Pier for the last 20 years, attracting tourists from around the world.
在过去的20年里，数以百计的动物在旧金山码头上清闲享受，这一景象吸引了来自世界各地的游客。

Only last month the pier was groaning under the weight of more than 1,500 sea lions. But now there are less than 10.
就在上个月，码头上海有着超过1500只海狮，但是现在却不足10只了。

The animals first arrived in 1990, attracted into San Francisco Bay by herring. Their numbers have fluctuated over the years with changing water temperatures and food supplies, but were at record levels earlier this year.
它们初到旧金山湾是在1990年，被这里的鲱鱼吸引着。这些年间，它们的数量随着水温和食物的供给变化而波动，但在近几年却不断创下最低记录。

beiju

where is the sea lions?