Underwater Adventure Party Ideas for Kids and Adults

Today I’m sharing a stylish Under The Sea party designed for older kids and pre-teens — a more sophisticated ocean theme rather than a Little Mermaid–style event.

Create a splash with this Under The Sea Party Birthday Party Ocean Party! Including Fish bowl centerpieces, starfish cupcakes, tablescape, cake and Under the Sea Party Invitations! A great Under the Sea Birthday Party Ideas for kids and teens!

The centerpiece of the desserts was a simple two-tiered cake that looked custom but was easy to prepare. To save time and cost, the host ordered a plain bakery cake and embellished it at home. A sprinkle of brown sugar made a convincing “sand” layer, then shells, starfish and a few tropical flowers turned it into a showpiece.

I’ve done a similar makeover on a store-bought cake for my daughter’s graduation and was thrilled with the result — simple additions transform a basic cake into something special.

Create a splash with this Under The Sea Party Birthday Party Ocean Party! Including Fish bowl centerpieces, starfish cupcakes, tablescape, cake and Under the Sea Party Invitations! A great Under the Sea Birthday Party Ideas for kids and teens!

Invitations received a delicate finishing touch with raffia and small shells tied on before mailing, giving guests a preview of the ocean-inspired theme.

Create a splash with this Under The Sea Party Birthday Party! Including Fish bowl centerpieces, starfish cupcakes, table styling, cake and Under the Sea Party Invitations! A great Under the Sea Birthday Party Ideas for kids and teens!

For seating, two rectangular tables were joined to form a large square so everyone could sit together and enjoy the centerpiece. Matching chair covers or coordinated linens will complete the polished look.

Create a splash with this Under The Sea Party Birthday Party Ocean Party! Including Fish bowl centerpieces, starfish cupcakes, tablescape, cake and Under the Sea Party Invitations! A great Under the Sea Birthday Party Ideas for kids and teens!

Live goldfish in mini bowls served as charming centerpieces and doubled as take-home favors. Each guest received a mini fishbowl with a goldfish to bring home. The centerpieces were styled with aqua tablecloths, fish nets, coral accents and shells. Clear aqua pebbles in the bowls added color, and a small mermaid figurine provided a playful surprise.

Create a splash with this Under The Sea Party Birthday Party Ocean Party! Including Fish bowl centerpieces, starfish cupcakes, tablescape, cake and Under the Sea Party Invitations! A great Under the Sea Birthday Party Ideas for kids and teens!

A simple band of shells and starfish made pretty napkin rings and reinforced the theme on the table setting.

Create a splash with this Under The Sea Party Birthday Party Ocean Party! Including Fish bowl centerpieces, starfish cupcakes, tablescape, cake and Under the Sea Party Invitations! A great Under the Sea Birthday Party Ideas for kids and teens!

The dessert table included an attractive platter of cupcakes decorated with starfish and shells to match the cake. Coordinated colors and consistent details kept the sweets table visually appealing.

Create a splash with this Under The Sea Party Birthday Party Ocean Party! Including Fish bowl centerpieces, starfish cupcakes, tablescape, cake and Under the Sea Party Invitations! A great Under the Sea Birthday Party Ideas for kids and teens!

Near the end of the party, guests helped themselves to treats from an Ocean Candy Bar. Use apothecary jars, shells and fish nets to style the display, and provide scoops and bags so guests can fill their own take-home candy.

Create a splash with this Under The Sea Party Birthday Party Ocean Party! Including Fish bowl centerpieces, starfish cupcakes, tablescape, cake and Under the Sea Party Invitations! A great Under the Sea Birthday Party Ideas for kids and teens!

Event styling and concept provided by Kreative Kiddie Events.

You might also enjoy making Sand Dollar Cookies as an easy, themed treat for an Under The Sea party — they’re simple to prepare and very cute on a dessert table.

Sand Dollar Cookies | OHMY-CREATIVE.COM
Another fun summer celebration to consider is a vintage-style Luau party with plenty of playful details.
Vintage Luau Party Decorations | OHMY-CREATIVE.COM
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