A child’s birthday is the most special occasion for many parents as they put all the effort into making it a big hit. While planning a birthday party some are starved of ideas, while others find the cost of throwing a birthday party expensive. Don’t worry, we have got you covered with some of the most creative mermaid birthday decoration ideas to take your celebration to the next level. For the kids who love Ariel, the fictional character in the animated movie “The Little Mermaid”, can go for an under the sea Mermaid-themed birthday party.