Device found on the beach by stunners (10)

I believe the answer is:

bombshells

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'stunners' is the definition.
The definition and answer can be both related to natural events as well as being plural nouns.
Perhaps you can see a link between them that I don't see?

'device found on the beach by' is the wordplay.
'device' becomes 'bomb' (bomb is a kind of device).
'found on' is a charade indicator (letters next to each other).
'the beach by' becomes 'shells' (I can't justify this - if you can you should believe this answer much more).
'bomb'+'shells'='BOMBSHELLS'

Can you help me to learn more?

I've seen this clue in The Irish Times and the Irish Times (Crosaire).

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