3 tours · €104–€132 per person · ★ 4.8
Bioluminescence in Grand Cayman lives in a shallow bay off Rum Point where the water lights up blue around anything that moves, and the tours go out after dark on the nights around the new moon: a snorkel in the glow, a boat ride or a private boat. The 3 on this page were picked by hand after we read every listing and kept only operators rated 4.5★ or higher. The cheapest is the boat tour from €104 per person; the most expensive is the private night charter priced per boat.
The glow depends on darkness, so the operators run on a calendar around the new moon and cancel on bright nights; aim for the start of your stay so a cancelled night has a second chance. The snorkel version is brighter and needs a confident swimmer; the boat tour suits children and non swimmers. Rum Point is a long drive from Seven Mile Beach and the ships have sailed by then, so this is a hotel guest's tour with pickup on most listings. The best reviewed Grand Cayman bio bay tours come first below.
We have a comfortable fast boat. Very friendly, professional and safety focused crew/staff. We have been operating bioluminescence tours for over 7 ...
Bioluminescence is rare, and the Cayman Islands offer a unique opportunity to witness this phenomenon. Tours are eco-friendly, conducted in small grou...
Your trek to the bioluminous bay leaves at 5:30 PM in winter months and 6:30 PM in the summer months from the Cayman Island Yacht Club Dock B Slip 43....
Tours and prices on this page last updated October 16, 2026