Bluefish are one of the most common surf fishing species.  Bluefish travel in schools and feed voraciously usually on baitfish.  When a school of bluefish is nearby, it's hard to catch anything else.  They will strike nearly anything that looks like a piece of mullet.  Finger mullet is an excellent bait and works great, live or dead.  Bluefish have sharp teeth and are very skilled at swimming by and biting off pieces of bait, so I've found that cutting the mullet into smaller pieces results in hooking more fish.  I recommend using a wire leader to prevent line cuts from their sharp teeth.  Bluefish are regulated in the state of Florida, so please check here for current Florida saltwater fishing regulations.