What do we know about the sea? We 1 that it looks very beautiful when the sun is shining 2 it. We also learn that it can be very terrible when there is a strong wind. What 3 things do we know about it? The first thing to remember is that the sea is very big. 4 the map of the world, there is 5 sea than land. The sea covers three quarters of the 6 . Some parts of the sea 7 very shallow. But some places are very deep. There is one place near Japan . It is nearly 11kilometers deep. The 8 mountain in the world is about 9 kilometers high. If we put the mountain into the sea at that place, there would be 9 kilometers of water above it! The sea is salty. There is one sea called the Dead Sea. It is very salty. It is 10 salty that swimmers cannot sink! Fish cannot live in the Dead Sea.