Crossword Genius

Marine predator had pass to pass around Greene novel (6,3)

Ross

I believe the answer is:

conger eel

I'm a little stuck... Click here to teach me more about this clue!

'marine predator had pass' is the definition.
I can't tell whether this defines the answer.

'pass around greene novel' is the wordplay.
'pass' becomes 'col' (col is a term for a mountain pass).
'around' is an insertion indicator.
'novel' indicates anagramming the letters (letters in a new or novel order).
'greene' anagrammed gives 'ngeree'.
'col' going around 'ngeree' is 'CONGER-EEL'.

'to' is the link.

Can you help me to learn more?

(Other definitions for conger eel that I've seen before include "Large slippery fish" , "long haul?" , "swimmer" , "one is long in the water" , "Predatory sea creature" .)

I've seen this clue in the Sydney Morning Herald.
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