Another oceanic resident, the quahog clam (Arctica islandica), is thought to be one of the longest lived metazoans of all.

另一位海洋居民—圆蛤被认为是世界上最长寿的后生动物。

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This is the only season when tourist operations are possible in Arctica. All other time makes trips to the North Pole too risky due to weather conditions.

这是唯一适合北极旅行的季节，其他时间由于天气原因都太冒险。

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This is the only season when tourist operations are possible in Arctica. All other time makes trips to the North Pole too risky due to weather conditions.

这是唯一适合北极旅行的季节，其他时间由于天气原因都太冒险。

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