1: Swamp creature resting tail on a rocky outcrop (5)
 5: Walesa still embodies how Nobel Laureates soar? (3)
 9: Run around near a stadium (5)
 10: Turning up to follow bashful rodent (5)
 11: Bounder beheaded by slippery swimmer (3)
 12: Clear initial rubbish in drain (3)
 13: 4-down Arias hit high note in some of the lungs (3,3)