at depth or at the surface has been discussed in the past. A search on scubaboard should turn up the results so you can hear what others have had to say about this.
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
Are the CPR , O2, and first aid cards required for NAUI rescue class specific for diving. I am an EMT w/ Amer.Red Cross CPR / ACLS cards and was told they don't apply to the NAUI class - why?