Aquatic sport (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">aquatic sport</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for water polo that I've seen before include "Game played by tams of swimmers with large ball (5.4)" , "Seven-a-side game involving swimming" , "Team sport with wet participants" , "Game played by swimming teams with large ball" , "Game played by teams of swimmers with large ball" .)
(Other definitions for diving that I've seen before include "Plunging headlong" , "Plunging oneself into water" , "Going underwater" , "Going under water" , "water event" .)