For some scholars, they're turbulent waters! (5)

I believe the answer is:

lochs

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'waters' is the definition.
The answer and definition can be both natural objects as well as being plural nouns.
Perhaps they are linked in a way I don't understand?

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for lochs that I've seen before include "Lakes in Scotland" , "Scottish lakes" .)

I've seen this clue in the Evening Standard.

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