Sea dweller not entirely near a bit of sun (8)

I believe the answer is:

stingray

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'sea dweller' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.

'not entirely near a bit of sun' is the wordplay.
'not entirely' means to remove the last letter (not all of the word).
'near' becomes 'stingy' (I've seen this before).
'a bit of sun' becomes 'ray' (I've seen this in another clue).
'stingy' with its final letter removed is 'sting'.
'sting'+'ray'='STINGRAY'

Can you help me to learn more?

(Other definitions for stingray that I've seen before include "Poisonous spined fish" , "Marine creature with venomous tail" , "swimmer" , "TV show" , "Flatfish with barbed spine" .)

I've seen this clue in The Times.

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