Audible Over 30 Feet Away. Lightweight and Compact. An Essential Dive Tool. Easy & Convenient to Use. Simple & Affordable. Made in the U.S.A. Lifetime Warranty. Available in a variety of Colors. The Aqua Maraca was designed by divers to improve basic communications under water. Using computer design techniques and extensive testing, we have developed a simple yet reliable tool that all divers can use and benefit from.