sentences:  The standard procedures for scuba and surface-supplied diving are essentially the same as for any other similar diving operation using similar equipment in a similar environment, by both recreational, technical and other professional divers.There are a few special cases where scientific diving operations are carried out in places where other divers would generally not go, such as blue-water diving.Scientific dives tend to be more task oriented than recreational dives, as the scientist is primarily there to gather data, and the diving is of secondary importance, as the way to get to the worksite.