The island opened to general use on September 9, 2010, concurrent with a new island map. Steamworks Island will normally be in the center or bottom center of the map.
You go to Steamworks and head to the museum and there is the Deogen
you go in it
go onto youtube and search video walkthrough for steamworks
its in the museum on mainstreet of steamworks island :)
Go on poptropicasecrets.com
It's Steamworks Island #14th Island
(The solution is at the related question "How do you beat Steamworks Island")
You find the dirty beaker inside the Steamworks Museum when you go all the way to the top right side.
the crab on steamworks island is next to the living quarters
steamworks island
Go one building right of the Cantina on Main Street.
you go all the way to the right and the top is red