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COSTUMES
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¯ Jelly fishing gear costume:
  Body slam the target at the Krusty Krab. A tent will appear and you will have
  the jelly fishing gear costume.

¯ Mermaid man costume:
  In downtown at the construction site, deliver Krabby Patties to Patrick and
  he will give it to you.

¯ Reep blower costume:
  Win the 100 jelly fishing contest in Jelly Fish Fields. Your reward will be
  the Reep Blower costume.