I am part of a mommy and me minnow swimming class. It is for ages 6 months to 2 1/2 years. It is a 30 minute class, amazing instructors (K. and Emily). It is at Emily's residence in a warm salt water pool. Groups of 3 or more are $250 for 10 lessons. So fun!
We sing songs, learn water safety, which I think is the most important, learn to blow bubbles, do submersions, do paddles, and get your child comfortable in the water. Minor crying in the beginning and then it gets fun.
She has a routine so the kids know what to expect in the water and any fear subsides very quickly. It's relaxing and gets your child comfortable in the water sooner rather than later... and believe me, later is no fun!
The Water Whisperer... it's fab!