Part of shark seen above water: Floridans unsettled (6,3)
I believe the answer is:
dorsal fin
'part' is the definition.
(dorsal fin is a kind of part)
'shark seen above water floridans unsettled' is the wordplay.
'floridans' can be anagrammed to 'DORSAL FIN'.
Though, I'm not clear how the anagram is indicated.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for dorsal fin that I've seen before include "bit of fish" , "swimmer? Just a bit" , "All that may be seen of shark" , "Projection on back of fish" , "Stabilising appendage on a fish's back" .)