Safety is the first priority for any water activities with or without a coach.
When engaged in water activities, please note that safety comes first. Check if your physical conditions qualify for these activities. Ask if relevant lifeguards and coaches are qualified. Do not go snorkeling alone; it is best to be accompanied by an expert or a coach. Meanwhile, lifejackets must be worn as appropriate in case of accidents or danger. Please take special caution in safety, and pay attention to whether the water recreational facilities are legally own and permitted in those waters.