If you're thinking of throwing a fabulous mermaid birthday, don't miss these 45 best ideas from Catch My Party for the ultimate mermaid under the sea birthday party!

You will be blown away by these ideas and inspirations, and they will help you plan the mermaid party of a lifetime.

The week has flown by and here we are again with our 4 favorite parties of the week! All of these parties are amazing and so colorful. We have a gorgeous under the sea birthday party that you're going to fall in love with. The birthday cake is to die for too!

You won't want to miss the glam circus 6-month party either! It's definitely different from a traditional circus party and is so impressive!

Summer is still in full swing so I just had to include a stunning pastel under the sea party as one of my 4 favorites!

The dessert table is absolutely gorgeous! You're going to love it!

You won't believe the amazing parties that were added to Catch My Party this week! I had a tough time picking out my 4 favorites, but this stunning Under the Sea Mermaid Party just blew me away!

Check out the others I've picked for you. You'll love the fabulous ideas!

So many fantastic parties were added to Catch My Party this week, including a pretty Under the Sea Baby Shower! We usually see mermaid birthday parties, not mermaid baby showers. I love this idea!

My favorite parties this week include an beautiful mermaid inspired baby shower, an adorable Pooh Bear 1st birthday party, a gorgeous Alice in Wonderland birthday party and a cute Lumberjack birthday party. Take a look at them below...

Today we're giving away this sweet set of FREE under the sea birthday printables from Neta at NecessiTees. Now if you're thinking under the sea, think of these happy little printables!

The collection includes invitations, party circles, favor tags, water bottle labels, napkin rings, and a banner.