Based in Sarasota, Florida, Mark Grevelding is the founder of, a water exercise app for fitness consumers.  He is also the founder of, an online education resource for aquatic fitness professionals, which currently has over 200 streaming videos pertaining to water fitness. Mark has been a training specialist and consultant with the Aquatic Exercise Association (AEA) for the past 15 years.  AEA is the world's most widely respected aquatic fitness certification & education organization. Mark has taught group exercise (water & land) for 25 years and has certified and educated water fitness professionals all across the globe, including Australia, Asia, Europe and South America.  He has produced over 250 videos for both fitness professionals and fitness consumers.  In 2011, Mark was honored with AEA's Global Award for Aquatic Fitness Professional. 

Mark Grevelding