Oneder the Sea First Birthday Ideas: Mermaid Party Guide
"Oneder the Sea" is one of the cutest first birthday puns, and the mermaid and under the sea theme is easy to pull off with pastel colors, seashells and bubbles. Here is how to plan the party, step by step.
1. The invitation
Send first birthday invitations 3 to 4 weeks before the party. Edit your child's name, the date and the address in Canva, then send the invitation by text or print it.
Templates: Oneder the Sea mermaid invitation, Oneder the Sea invitation with mermaid, Oneder the Sea invitation, Storybook Oneder the Sea, Splish Splash ocean animals, Pastel under the sea
Turning two? Try the Two the Sea invitation.
2. Wording ideas
- "Come under the sea, [Name] is turning ONE!"
- "Our little mermaid is making waves"
- "A whale of a celebration"
- "Shell-ebrate with us"
3. Decor
Pastel balloons in aqua, lilac and pink look like bubbles and sea foam. Add a welcome sign, a banner over the cake table, seashells, starfish and a sheer blue tablecloth. A high chair banner with the number one is a sweet touch for the cake smash.
Templates: Mermaid 1st birthday welcome sign, Mermaid birthday banner, Under the sea banner with 15 flags
4. Food and treats
Goldfish crackers, "seaweed" veggie sticks, blue jello cups, shell-shaped pasta salad and seashell cookies are all easy wins. Wrap chocolate bars and label water bottles to match.
Templates: Mermaid chocolate bar wrappers, Mermaid bottle labels
5. Favors
Bubbles, mini sand buckets, shell-shaped crayons or a small bag of seashell candy all work. Tie on a favor tag or label a gable box.
Templates: Mermaid favor tags, Mermaid gable box labels, Mermaid thank you card
Buying several pieces? Get 3 or more items and you save 25% automatically, or 35% on 5 or more.
First birthday FAQ
Can I change the age on the invitation?
Yes. The name, age, date and all other wording can be changed. Only numbers that are part of the artwork stay as designed.
How do I edit the templates?
Every template is an instant digital download. You edit it in Canva with a free account, then print at home or at a print shop, or send the invitation by text and email. Nothing is shipped, so it works even if the party is next weekend.