At the shoreline I see sad resort (7)

I believe the answer is:

seaside

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'at the shoreline' is the definition.
I can't tell whether this definition defines the answer.

'i see sad resort' is the wordplay.
'resort' indicates anagramming the letters (re-sort the letters).
'i'+'see'+'sad'='iseesad'
'iseesad' is an anagram of 'SEASIDE'.

Can you help me to learn more?

(Other definitions for seaside that I've seen before include "Coastal region" , "Holiday destination" , "leisure area" , "Popular resort area" , "Old song 'I do like to be beside the . . . . . . .'" .)

I've seen this clue in The Globe and Mail.

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