
PADI certifications are a great option for certified divers. PADI offers a variety of levels of training. There are three components to the course: an online self study module to help you learn diving theory and confined water diving to improve your comfort with your equipment. Finally, there is open water diving to put your newly acquired knowledge into practice. Whether you're just getting started in the water or have been diving for several years, PADI certifications are a great way to get a feel for diving.
PADI
PADI's certification chart lists the different levels of certification. PADI offers several courses for divers who want to be certified as a diving professional. PADI offers certifications for all levels, including Open Water Diver and Scuba Diver.

SSI
The first step to becoming a SSI instructor is to learn the SSI certification chart. Important to note is that SSI certifications begin at the basic level, and go up to more complex levels. SSI certification courses can be taken online or in person. During your training, you will experience several sessions in both open- and confined water. A qualified instructor will guide you and help you to improve your skills.
NAUI
There are many differences among the NAUI Certification charts and PADI. There are major differences in the certification requirements and teaching methods. These differences can have a large impact on a diver's skill level. Your attitude towards diving and physical abilities will determine which certification you should pursue.
CMAS
CMAS padi certifications are slightly different to PADI's. While the certifications of both agencies are similar, they are not identical. For example, CMAS requires that you complete 4 training dives and dive to 18 metres, while PADI requires five dives.
BSAC
After completing the BSAC Open Water Diver programme, a diver can take further courses with BSAC. The BSAC certification charts lists all courses that will be required to become an advanced diver. These courses may require a fee that can vary from 25 to 55 US$.

Digital Underwater Photographer
PADI's digital underwater photographer certification chart includes an introduction and several digital camera techniques. This specialty is available as either a single or two-part course. It covers topics such as colour filters and white-balancing as well as camera setup. Students learn file formats and image resolution.