冰川的向前移动，其底部与海洋接触处的融化，还有波浪和潮汐运动，导致冰块断裂，漂浮到海上。
The forward movement, the melting at the base of the glacier where it meets the ocean, and waves and tidal action cause blocks of ice to break off and float out to sea.
噢，还有一种怪异的海洋生物，那就是海马。海马是鱼，但是它长得又不像鱼。
Oh, there is another strange sea life, you know, the sea horse. It is a fish, but it does not look like a fish.
海豚，还有其他一些海洋动物，它们睡眠时会关闭大脑的一个半球。
Dolphins, as well as other marine animals, shut down one hemisphere of the brain when they go to sleep.
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