Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.

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 Check 

Across: 1. the first dune formed above the high water mark 3. this type of wave deposits material on the beach 4. that part of a beach above which the waves don't normally reach 6. distinctive line of sand or shingle deposited in the direction of longshore drift 7. larger sized deposits than sand which can form a beach 9. poorly drained land behind a spit or on tidal mud flats 11. build up of sand across the mouth of an inlet 12. low lying land behind a sand dune 14. mounds of wind blown sand 15. daily sea level changes caused by the gravitational force of the moon

Down: 2. long sharp leaved plant, one of the first to colonise a dune 5. wide, tidal river mouth 8. build up of sand off shore, usually below the surface 10. one of the first plants to colonise tidal mud flats 13. wide, crescent shaped sandy inlet