Afloat at sea, I’m on top with something to eat (4,4)
I believe the answer is:
meat loaf
'something to eat' is the definition.
(meat loaf is a kind of food)
'afloat at sea i'm on top' is the wordplay.
'at sea' indicates anagramming the letters.
'i'm' becomes 'me' (both refer to the person speaking or writing).
'on top' says to put letters next to each other (down clues only).
'afloat' is an anagram of 'atloaf'.
'atloaf' after 'me' is 'MEAT LOAF'.
'with' is the link.
(Other definitions for meat loaf that I've seen before include "baked in a tin?" , "Bully-beef etc" , "Minced beef dish" , "Baked savoury dish" , "food" .)