Answer: swimmer

AnswerCrossword Clue
SWIMMERAquatic athlete
SWIMMERPool member
SWIMMERNatatorium user
SWIMMERBe quietly angry about head of wet athlete at the pool (7)
SWIMMERSpitz, for one
SWIMMERPool party?
SWIMMERSpitz, notably
swimmerone that swims (to propel oneself in water)