There are three players on the waiver wire right now that I think Miami could monitor and even claim. I will post the players below and explain why I believe Fins could make claims for these players.
QB Brett Ratliff: The Cleveland Browns waived Brett Ratliff yesterday do in large part to a numbers game. Ratliff is a former preseason standout player and has shown promise when given an opportunity, with Henne out for what could be weeks and Miami not having a clear #3 QB for Thursday's game I could see the Dolphins putting in a claim for Ratliff. Miami could also gain plenty of information from Ratliff for when they play Cleveland in the coming weeks.
LB Shawn Crable: The Patriots waived Crable and most are scratching their heads about this move. Crable has shown promise in NE and is coming of his best game with 4 tackles and half a sack against the Steelers. The Fins placed a claim on Merriman as the feel they needed help at OLB, it would not surprise to see Miami place a claim on Crable. Also He would bring info on the Patriots, keep an out out.
WR Ed Gant: At one point Ed Gant was a promising WR in Arizona who Miami was interested in acquiring. I must admit I don't know much about this guy, but being that the Fins have shown interest in the past I would monitor where Gant ends up.