Go More Than Fin Deep. The Oceanic Predator Freediving Fins are designed for entry-level free divers and open-water hunters, but with the ease of use and quality you can expect from Oceanic. Stylishly designed and expertly crafted, they feature a full-foot design with a rigid long blade for excellent propulsion. A ribbed blade and side rails help focus the power of every stroke for maximum power and stability, and the foot pocket has a large heel pull tab for easy donning and doffing.