Shark Wheels may have actually reinvented the wheel - Newegg Insider
Vintage 1960s Nash Shark #1 22" Wood Sidewalk Skateboard w/ Metal Wheels - Blue | eBay
Street Surfing Street Skate 31" Skateboard - Shark Fire
Shark Wheel Bamboo Swirl 31" Cruiser Skateboard – Longboards USA
Shark Attack Skateboard | Zazzle
Amazon.com: Tony Hawk 34" Complete Cruiser Skateboard, Cool Graphic Longboard, Great Option for Travel, Sport and Entertainment, Shark Mouth : Sports & Outdoors