There are some tips that you need to consider while diving for the first time. Be a good observant and only a good observer can distinguish the objects in the water. Sometimes some emergency situation may happen during the dive. So, you should be prepared enough to face those emergency situations. Focus on what you are doing and maintain your breath to provide sufficient oxygen for proper functioning of the body. Usually hand signal can help to recognize from the distance. So, you should study about these signals from your diving instructor. For more information visit, https://tailgrabber.blogspot.com/2019/03/tips-you-need-to-follow-in-your-first.html