"swirling-surf" is simply a more accurate and detailed description of surf that occurs in the ocean. "Swirling" implies that the surf is especially large and rough.
I'm guessing you're identifing the verb in this sentence in that case the answer would be:
can be considered
Hey There!! (/≧▽≦)/
The answer to this is:
B) dreary, bleak, dying, sorrow
Sorry, I couldn't get a explanation to this...
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The answer is study if not I apologize