Fossil Fighters - Shark Teeth

How do I get the shark teeth? I cant seem to find the dens, I break all the rock but nothing is there.Thanks

you have to break the rocks until you find a black hole.
then, after you enter the hole, you can find the shark (go inside every hole).Post Merge: [time]1251288058[/time]
double post...hehehehhttp://gbatemp.net/index.php?showtopic=174372 (spoiler inside)

I still cant fid the shark den. I have broken all the rock but still nothing. I found 3 holes, 2 are empty and 1 goes to the shipwreck. What am I doing wrong?

Have you tried the link that kukuru posted?

tried it but still cant find them

Go to each hole again...after you go down each hole try going down not up....
-The hole where I got the teeth is in the left side of the map...

From GameFAQs:

Question from wolves_ruleya
Asked on: 8/13 9:45PM
How do I find the denture shark's dentures?The dude said look for a big breakable rock, but where? where they usually hang out? through a passage way?Accepted Answer
From: Azn Playah 8/13 9:59PMGo to the map where the hidden entrance to the pirate ship is. I'm pretty sure the shark den is the lower right secret entrance (there's 3 in that map, the lower left is the pirate ship one). Just enter, walk down and you can't miss it.

http://www.gamefaqs.com/portable/ds/qna/960571.html?qid=99230