Shark I set free into the wild (6)
I believe the answer is:
rakish
'the wild' is the definition.
(thesaurus)
'shark i set free' is the wordplay.
'set free' indicates an anagram.
'shark'+'i'='sharki'
'sharki' anagrammed gives 'RAKISH'.
'into' acts as a link.
(Other definitions for rakish that I've seen before include "Dapper" , "Disreputably dashing" , "Jaunty and irresponsible" , "Dashing, devil-may-care" , "Jaunty; fast-looking (boat)" .)