Crossword Genius

These perhaps disturbed eelgrass catching prey finally (4,5)

Ross

I believe the answer is:

grey seals

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'these' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'disturbed eelgrass catching prey finally' is the wordplay.
'disturbed' indicates anagramming the letters (the order of letters is disturbed).
'catching' indicates putting letters inside.
'finally' says to take the final letters.
The last letter of 'prey' is 'y'.
'eelgrass' with letters rearranged gives 'greseals'.
'greseals' enclosing 'y' is 'GREY SEALS'.

'perhaps' is the link.

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