The sea looks very beautiful when the sun is shining on it. It can be very terrible( 可怕的) when there is a strong wind. The sea is very big. It covers(覆盖) three quarters(四分之三) of the earth. The sea is also very deep in some places. In most parts of the sea, there are lots of fishes and plants. Some live near the top of the sea. Others live deep down. There are also a lot of small living things. A lot of fishes live by eating them. The sea becomes colder and colder. Only some men can go down into the deep sea. But in 1970, five women scientists (科学家) lived in the deep sea for fourteen days.
