How do you o-fish-ally celebrate someone as fin-tastic as mom? Learn more about animal parenting habits onsite during extended Mother’s Day Weekend hours with an I SPY trivia hunt and interpretive signage. May 7 - 10, Greater Cleveland Aquarium will also be offering a 10% discount on all Annual Passes (Individual, Senior; Couple, Senior Couple, Family or Grandparent; new, renew or rejoin; online only) with code MOMPASS and a 10% discount on registration for upcoming shared online family programs (general or Passholders; Virtual Shark, Freshwater Exhibits or Stingray & Coastal Exhibits Encounters only) with code VIRTUAL10.