Was tucked in left, right and centre but looked like an oversized seal (6)
I believe the answer is:
walrus
'an oversized seal' is the definition.
The answer and definition can be both animals as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'was tucked in left right and centre but looked' is the wordplay.
I cannot quite see how this works, but
'left' could be 'al' (I've seen this in other clues) and 'al' is located in the answer.
'right' could be 'r' (abbreviation) and 'r' is found within the answer.
The remaining letters 'wus' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'like' acts as a link.
Can you help me to learn more?
(Other definitions for walrus that I've seen before include "whiskers" , "Marine mammal with two large tusks" , "Marine mammal with two long tusks" , "Amphibious Arctic tusked animal" , "Large tusked marine mammal" .)