First, ya got to learn to maintain perfect buoyancy in a 60 degree to
vertical head-down position.

Then, you'll find they're everywhere.

Drive a stake in the muddy bottom, chum around the stake with dried dog food,
come back in an hour and toss your cast net.

Dennis

Depends on what kind of shrimp you're looking for.  Here in S. Florida,
cleaner shrimp, both red and blue, are pretty common.  They tend to live in
holes in the reef.  Most often, you see their antennae first.  Other than
that, the only thing I can suggest is to dive at night.  Their eyes glow
quite brightly.

Lee

Look for anemones and look them over carefully when you find one. Shrimp and anemones
go together about the same as clownfish and anemones. Corkscrew anemones in
particular are likely to have a resident shrimp or three. In fact, I'm not sure I've
ever seen a corkscrew anemone that didn't have at least one Petersons cleaner shrimp
with it.

Until you get that perfect buoyancy control Mike was talking about, you can rest
carefully on the bottom when you find a corkscrew anemone next to a sandy spot, then
hold your hand near the anemone with your fingers a bit higher than the heel of your
hand. If you can remain fairly motionless you may get an up close and personal look
at some of the shrimp. When you do develop that perfect buoyancy you can get even
more up close and personal. Here's a photo of Mike demonstrating:

http://www.kmec.uhh.hawaii.edu/_borders/shrimpinmouth.jpg