what age can you qualify to become a certified SCUBA diver????
please help

Through PADI (world’s largest diver training organisation) the minimum age is 10 years — though they do let younger children (from 8 years old) do a fun taster "Bubblemaker" session in a swimming pool.
If you’re under 15, you can qualify as a PADI Junior Open Water Diver, which you can upgrade to the full PADI Open Water Diver certification upon reaching 15.

The BSAC (British Sub Aqua Club) sets its minimum age higher — 12 years. But that’s because its training is designed to produce a more independent diver, and is also geared to diving in more demanding environments.

PADI general diving course requirements:
http://www.padi.com/padi/en/sd/whatsrequired.aspx
PADI Bubblemaker courses:
http://www.padi.com/padi/en/kd/bubblemaker.aspx
BSAC general course info:
http://www.bsac.org/page/498/bsac-qualifications.htm#top

Happy diving, anyway!