Travel 5 things first-timers should do in Grand Cayman, from snorkeling with stingrays to bioluminescent kayaking July 9, 2019July 9, 2019Adrienne Jordan, USA TODAYComments Off on 5 things first-timers should do in Grand Cayman, from snorkeling with stingrays to bioluminescent kayaking The 102-square-mile Grand Cayman Island has snorkeling with stingrays, scuba diving, walks along Seven Mile Beach, a botanical garden, and kayaking.