Aqualung inventor (8)
I believe the answer is:
cousteau
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">aqualung inventor</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for cousteau that I've seen before include "Jacques --, French ocean explorer" , "Jacques Yves -, French oceanographer" .)