From between October and May jellyfish, also known as stinger, can be found in the waters of the Great Barrier Reef. Most stingers/jellyfish are harmless, however some varieties may cause a serious reaction. It is extremely rare for a serious incident to occur due to stingers and is even rarer when part of a tour group with first aid within easy reach. The crew on your tour are conscious of the danger of marine stingers and will take appropriate steps to ensure your protection if they believe conditions are such that there is a possibility of encountering these creatures. Lycra suits are available to protect guests from the sun and to reduce the possibility of stings and irritations on most tours - please check the inclusion of your Great Barrier Reef tour to find out rental costs if any.