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Your shark has an anal fin, 5 gill slits, and 2 dorsal fins. Does your shark have dorsal fin spines? It has no dorsal fin spines.(back to previous level) Cocos Island | Sharkmasters | World of Sharks | Dispatches E-mail | Resources | Site Map | Sharks Home Editor's Picks | Previous Sites | Join Us/E-mail | TV/Web Schedule | About NOVA Watch NOVAs online | Teachers | Site Map | Shop | Search | To Print PBS Online | NOVA Online | WGBH © | Updated June 2002 |