Nature theme
Under the Sea birthday party ideas
Dive in with mermaids, sharks, and colorful fish.
Send Under the Sea invitations, track RSVPs, build a shopping list, and plan the day — free for up to 30 guests.
Under the Sea color palette
Ocean Blue
#0ea5e9
Teal Wave
#14b8a6
Sand Gold
#fcd34d
Sea Foam
#f0f9ff
Under the Sea party activities
- Bubble Station
- Sand Art
Under the Sea shopping list
- Shells
- Blue jelly
- Fish nets
Under the Sea party FAQ
How do I send Under the Sea party invitations?
Create a free MiniEvent event, pick the Under the Sea theme, add your guest list, and send themed email invitations. Guests RSVP from a link — no account required.
What do I need for a Under the Sea party?
Shells, Blue jelly, Fish nets. MiniEvent turns this into a budgeted shopping list you can edit.
Is MiniEvent free for a Under the Sea party?
Yes — MiniEvent is free for parties up to 30 guests, including Under the Sea invitations, RSVP tracking, a shopping list, and a day-of timeline. Pro ($5/month) adds AI helpers and up to 50 guests.
What colors suit a Under the Sea theme?
The Under the Sea palette pairs Ocean Blue, Teal Wave, and Sand Gold. MiniEvent applies these across the invitation automatically.
More party themes
Plan your Under the Sea party
in five minutes.
Free for up to 30 guests. No credit card, no commitment.