" Swimmer’s ear is a bacterial infection found in the outer ear canal, typically developed after swimming. This bacteria is common in water and soil, which, while innocuous, can induce a host of painful and aggravating symptoms. Swimmer’s ear’s symptoms include: Liquid build-up and drainage in ear – produces hollow, popping sound Redness inside of ear canal Lingering pain inside of ear Pus discharge Difficulty hearing – due to liquid build-up In worse cases, swimmer ...