
If you want to become a certified diver, you may want to consider a PADI certification. PADI offers several levels of training. You will find three main components to most courses: an online self studying module to teach you diving theory, confined diving to improve your equipment's comfort, and open water divers to put all your new knowledge into practice. PADI certifications will give you a solid foundation in diving.
PADI
PADI lists various levels of certification. PADI offers various courses for those who wish to become diving professionals. PADI offers certifications for all levels, including Open Water Diver and Scuba Diver.

SSI
You must be familiarized with the SSI certification list before you can become an SSI Instructor. Important to note is that SSI certifications begin at the basic level, and go up to more complex levels. SSI certification courses are generally either online or in-person. During the training, you'll complete several sessions in both open and confined water. An instructor who is specialized in water safety will assist you with organizing your skills according to how you perform.
NAUI
There are many differences in the NAUI and PADI certifications. There are major differences in the certification requirements and teaching methods. These differences can have a significant impact on a diver’s skill level. The best way to decide which certification to pursue is to consider your attitude and your physical capabilities.
CMAS
CMAS padi certification charts differ slightly from PADI. Although the two agencies are similar in many ways, their certifications are different. CMAS requires that you dive to 18 metres and complete 4 training dives. PADI requires five.
BSAC
A diver can continue his or her training with BSAC after completing the BSAC Open water Diver program. 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
The PADI certification chart for digital underwater photographer includes an introduction to the art of underwater photography and a range of digital camera techniques. This specialty can either be taken in one or two courses and covers topics like colour filters, white-balancing, camera setup, and how to use them. Students learn file formats and image resolution.