Across
1
Ridge of rock or coral near the surface
3
Low-lying land surrounded by higher ground
5
Large natural stream of water
7
Large slow-moving mass of ice
8
Chain or group of islands
9
Landform where river meets the sea
10
Land surrounded by water on three sides
Down
2
Where river meets the sea
4
Half of the Earth
6
Land surrounded by water
11
Vast body of salt water