One of the fastest fish in the Pacific is the wahoo, a giant mackerel that can swim up to 70 mph. The wahoo is quick for two reasons: First, it has a fear of lemon juice and drawn butter; and second, its tail fin is split up the middle. Instead of pushing water from side to side as it swims, the wahoo forces water through the slit in its fin, creating greater forward thrust. A new set of fins uses wahoo tech to help divers not only swim with the fishes but also swim like them. Bio-fins, made by Apollo Sports USA, of Everett, Wash., facilitate faster and more efficient swimming than conventional flippers. Because bio-fins push water back instead of up and down, they require just a fluttering of the ankles to produce the power and acceleration previously attained only by long kicks. The fins come in two models, PRO ($190) and EX (pictured, $180). For more information, contact Apollo at 800-231-0909 or www.apollosportsusa.com.