the sea lions have changed their natural behaviour 海狮已经改变了自然习性

344. How much fish a year from just here?
     这里一年能捕到多少鱼
345. From a million tons a year more or less.
     每年一百万吨上下
346. The catches are so vast,
     捕鱼量如此之大
347. the sea lions have changed their natural behaviour
     海狮已经改变了自然习性
348. to collect anchovies directly from the nets.
     直接从渔网中捕捉凤尾鱼
349. But it's a risky strategy.
     但这种方式存在风险
350. The crew witnessed sea lions caught in nets multiple times.
     船员们多次目睹海狮被渔网捕获

来自《行星地球 第三季 第二集 Planet Earth S03E02 海洋》第 347 行