Reportedly notice bullet meant for marine creature (3,4)

I believe the answer is:

sea slug

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'creature' is the definition.
(sea slug is a kind of animal)

'reportedly notice bullet' is the wordplay.
'reportedly' indicates a 'sounds like' (homophone) clue.
'notice' becomes 'see' (notice can mean to spot or see).
'bullet' becomes 'slug' (synonyms).
'see' sounds like 'sea'.
'sea'+'slug'='SEA-SLUG'

'meant for marine' is the link.
This may not be right. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for sea slug that I've seen before include "Shell-less marine mollusc" , "Creature" , "gastropod mollusc" .)

I've seen this clue in The Daily Express.

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