CMAS Two Star Diver

Diving up until 20 meters-deep in open waters, able to plan the dives.
Diving up until 40 meters-deep in open waters when joined by upper-level divers or instructors.
Dives requiring decompression stops should be avoided.

Requires: minimum age (15), parental permission (for minors), CMAS One Star Diver certification (or equivalent) and 10 logged dives after having been certified as CMAS One Star Diver (5 of which between 10 and 20 meters-deep), duly confirmed by an instructor or a CMAS Three Star Diver.

The CMAS Two Star Diver certification will be confirmed after 25 dives logged (10 of which between 10 and 20 meters-deep) - training dives included.  
It is the duty of every diver to make sure beforehand that there are no reasons that might prevent him/her from diving - if these reasons exist, this must be declared in writing.