Crack lamer French version of what surrounds us (3,3)

I believe the answer is:

the sea

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This could be a double definition.

'crack lamer french version of' is the first definition.
The answer and definition can be both natural objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'surrounds us' is the second definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.

'what' acts as a link.

Can you help me to learn more?

I've seen this clue in The Irish Times.

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