You can not find the pirates ribbon in fossil fighters what do you do

You need to go to the hotel and talk to Nick Nack (left elevator, door closest to the elevator). He'll tell you that he'll give you the beard ribbon if you do 3 things for him.
1: Go to Knotwood Forest and talk to the Chieftain. Do the hip-shaker dance and get the fossil bug shell. Go back to the hotel and give it to Nick.
2: Go to Bottomsup Bay. You'll have to dodge the denture sharks again. Get across the shark area and explore the 3 tunnels in the next area. You'll get an alert when you've found the shark's den. Clean the dentures and take them to Nick.
3: Go to Greenhorn Plains and go to the back area where all the junk was in the 1st Chapter. Talk to Duna and she'll give you the Sandal Fossil. Go back to the hotel and give it to Nick.
After you've done these things, Nick Nack will give you the beard ribbon. Make sure you didn't skip over anything.