1, They ventured on the sea.

2, The small boat was bobbing on the sea.

3, We saw many boats sailing on the sea.

4, Ships sail on the sea.

5, A lighthouse was flashing afar on the sea.

6, The computer simulates conditions on the sea bed.

7, The sun glared on the sea.

8, Just breathe in the ozone on the sea.

9, The billows heave on the sea.

10, We sit on the terrace, which looks out on the sea.

11, Computer software can be used to simulate conditions on the sea bed.

12, The sun shone on the sea and the waves danced and sparkled.

13, We held on the sea for about ten days, then we saw an island.

14, The mine finally came to rest on the sea bed.

15, The petrel came winnowing in from afar on the sea.

16, Everything that floated on the sea was sucked down by the whirlpool.

17, Many strange plants and fish live on the sea bed.

18, Or only like foam on the sea shore.

19, This accumulates on the sea bed as coral sand.

20, Each bird disposed itself on the sea like a great white flower.

21, The raft shifted uneasily on the sea,(http://sentencedict.com/on the sea.html) the bamboo stiffeners in the sails clattering on the masts.

22, Frith stood on the sea wall and watched the sail gliding down the swollen estuary.

23, Most seem to have lived on the sea floor, champing their way through mud.

24, Tiny oceanic microorganisms solidify carbon and oxygen gases dissolved in sea water to produce a salt which settles on the sea floor.

25, For centuries, their descendants led a harsh and precarious existence, relying heavily on the sea to provide food.

26, Soon he would smell the first sour tang of winter on the sea breezes.

27, It was a peculiar sort of fog which lay on the sea in dense banks striped with narrow, clear channels.

28, His bronze sculptures have the appearance of objects retrieved after many centuries on the sea bed.

29, Each human face is paralyzed by fear, eyes riveted on the sea.

30, There were more seagulls than there had been that morning, on the cliffs and on the sea itself.