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Bull sperm whales also undertake epic voyages across the Pacific.
雄抹香鯨也將開始穿越太平洋的偉大遠航
To reach such a gargantuan size,
要長到如此龐大的體型
young bulls must leave their family groups in the tropics and go in search of richer pickings.
年幼的雄鯨必須離開熱帶的鯨群，以尋找更豐富的食物來源
And so they head for the temperate seas of the higher latitudes.
于是它們前往更高緯度的溫帶海域
Crossing thousands of miles of ocean,
穿越數千公里的海洋之后
many voyage to one of the greatest feeding grounds in the South Pacific - New Zealand.
它們將會抵達南太平洋中食物最豐富的地區之一，新西蘭
Its two main islands span almost 1,000 miles, and journeying south,
兩座主島合起來跨越一千六百多公里，而且越是往南
its coastal waters become progressively cooler and weather-beaten.
島嶼沿岸的海水溫度就越低，氣候也越惡劣
At 40 degrees latitude, severe westerly winds known as the Roaring Forties blast the coastline.
在南緯四十度附近，被稱為"咆哮西風帶"的猛烈西風席卷著海岸線
Yet, it is the foul weather that produces the abundance of life found in these cold waters.
然而正是惡劣的氣候孕育了這片冷海水中豐富的生命
Storm-churning and colliding currents
暴風的攪動和洋流的沖撞
unlock the deep's great reserve of nutrients and send them to the surface.
使得深海中大量的營養物質上涌至海面
