Check out the requirements and information here:
http://www.meritbadge.com/files/scubabsa.pdf
Interesting.... in the requirements shown below (see area in BOLD) , it says you have to do this in a clear confined water ... (meaning a pool).
So to earn the BSA Scuba Badge, you have to do it in a pool? apparently open water diving is not allowed as part of this?
REQUIREMENTS
1. Before doing other requirements, successfully complete
the BSA swimmer test. To begin the test, jump
feet first into water over the head in depth, level off,
and begin swimming. Swim 75 yards in a strong manner
using one or more of the following strokes: sidestroke,
breaststroke, trudgen, or crawl; then swim 25
yards using an easy, resting backstroke. The 100 yards
must be completed in one swim without stops and
must include at least one sharp turn. After completing
the swim, rest by floating.
2. Discuss the importance of using the buddy system at
all times while scuba diving. Explain that a dive buddy
is there to assist with the donning and doffing of
equipment, to lend assistance in case of emergency
and to share in the underwater experience.
Remember, always dive with a buddyNever dive
alone!
3. Review hazards associated with scuba diving, including
causes of decompression incidents, and safety
procedures to avoid them. Explain the importance of
never using scuba equipment unless you are enrolled
in a training exercise, or have completed a diver certification
program, taught by a certified instructor.
By the end of a Water Skills Development session,
the participants will be able to meet the
following requirements in clear, confined
water:
4. State the purpose of the following pieces of basic
diving equipment: mask, fins, BCD, BCD inflator,
regulator, air gauge and alternate air source.
5. Describe how to locate the air gauge, and explain
how to recognize the caution zone on it.
6. Don and adjust mask, fins, snorkel, BCD, scuba, and
weights with the assistance of a buddy, instructor,
or certified assistant.
7. While underwater, demonstrate and recognize the
following hand signals: Okay?/Okay!; Stop; Up;
Down; Out of air; Come here; Ear problem; Slow
down/Take it easy; Something is wrong; Watch me;
Check your air supply.
8. Inflate/deflate a BCD at the surface using the lowpressure
inflator.
9. In shallow water, demonstrate proper compressed
air breathing habits; remembering to breathe naturally
and not hold the breath.
10. Clear the regulator while underwater using both
exhalation and purge-button methods and resume
normal breathing from it.
11. In shallow water, recover a regulator hose from
behind the shoulder while underwater.
12. In shallow water, clear a partially flooded mask
while underwater.
13. Swim underwater with scuba equipment while
maintaining control of both direction and depth,
properly equalizing the ears and mask to accommodate
depth changes.
14. While underwater, locate and read submersible pressure
gauge and signal whether the air supply is adequate
or low based on the gauges caution zone.
15. In shallow water, breathe underwater for at least 30
seconds from an alternate air source supplied by the
instructor.
16. Demonstrate the techniques for a proper ascent.