Crossword Genius

Body of water one might, reportedly, glimpse from here (5,3)

Ross

I believe the answer is:

irish sea

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'one might reportedly glimpse from here' is the definition.
The definition suggests a singular noun which matches the answer.

'body of water' is the wordplay.
'body of' becomes 'irish' (I can't explain this - if you can you should give a lot more credence to this answer).
'water' becomes 'sea' (the sea is water).
'irish'+'sea'='IRISH SEA'

Can you help me to learn more?

(Other definitions for irish sea that I've seen before include "Large quantity of water" , "It separates Ireland from Britain" , "Water west of Wales" , "Waters around IOM" , "Man's found here" .)

I've seen this clue in The Irish Times.
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