Under the Sea

Dive into a celebration under the waves. Our under the sea party decorations and supplies bring ocean color to the table with shell plates, fish and mermaid napkins, shark balloons, and everything in between. Perfect for a splashy birthday, a pool party, or a little explorer's ocean adventure.

52 products
Lobster print small plates for a summer, nautical, or seafood party
Lobster print small plates for a summer, nautical, or seafood party
Le Lobster Small Plates
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$8.50
Lobster guest towel with a red lobster print over a blue and white checker border for a seafood boil party
Stack of lobster print paper guest towels with blue checkerboard trim for a nautical summer party
Le Lobster Guest Towels
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$8.50
Red lobster print large napkin with wavy blue stripes for a summer seafood boil, nautical, or coastal party
Side view of stacked lobster print paper napkins with red crustaceans and a wavy blue stripe pattern
Le Lobster Large Napkins
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$7.50
Meri Meri octopus plates on white background with colorful illustrated octopus design for ocean birthday parties
Octopus plates at an under-the-sea birthday party table with coordinating napkins and cups
Octopus Plates
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$9.50
Meri Meri octopus napkins on white background with colorful illustrated octopus print for ocean birthday parties
Octopus napkins styled at an under-the-sea party table with turtle plates and ocean decor
Octopus Napkins
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$8.50
Meri Meri turtle plates on white background with colorful illustrated sea turtle design for ocean birthday parties
Turtle plates styled at an under-the-sea birthday party table with ocean-themed tableware
Turtle Plates
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$10.50
Meri Meri turtle napkins on white background with colorful illustrated sea turtle print for ocean parties
Turtle napkins at an under-the-sea birthday party table with ocean-themed decor and tableware
Turtle Napkins
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$8.50
Meri Meri shark cups on white background with illustrated shark and ocean design for beach birthday parties
Shark cups flat lay from above showing the Meri Meri shark and ocean print design for under-the-sea parties
Shark Cups
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$10.50
Meri Meri seahorse napkins on white background with colorful seahorse and ocean print for a mermaid party
Seahorse napkins styled at a Bonjour Fete ocean-themed party table with coordinating mermaid tableware
Seahorse Napkins
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$8.50
Mermaid tail party cups for an under the sea or mermaid party
Mermaid tail party cups for an under the sea or mermaid party
Mermaid Tail Party Cups
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$9.00
JELLYSQUISH NEEDOH Schylling Toys JELLYSQUISH NEEDOH Bonjour Fete - Party Supplies
JELLYSQUISH NEEDOH Schylling Toys JELLYSQUISH NEEDOH Bonjour Fete - Party Supplies
Jellysquish Needoh
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$7.95
Set sail sailboat small plates for a nautical or summer party
Boat shaped plates at a patriotic party table with red, white, and blue decor
Set Sail Small Plates
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$7.95
Set Sail beach club cocktail napkins with a life ring, anchor, lobster, sailboat, and beach club script for a nautical party
Nautical party picnic table with sailboat napkins, a red and white stripe runner, and sailboat cupcakes for summer
Set Sail Beach Club Cocktail Napkins
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$5.95
Set Sail guest towels in light blue stripe with tiny sailboats and rope for a nautical summer party
Nautical party picnic table with sailboat napkins, a red and white stripe runner, and sailboat cupcakes for summer
Set Sail Guest Towels
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$7.95
Sky blue compostable dinner plates for a birthday, baby shower, or eco-friendly party
Sky blue compostable dinner plates for a birthday, baby shower, or eco-friendly party
Sky Blue Compostable Dinner Plates
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$13.95
Sky blue eco napkins for a birthday, baby shower, or eco-friendly party
Sky blue eco napkins for a birthday, baby shower, or eco-friendly party
Sky Blue Eco Large Napkins
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$7.95
Palisades blue cabana stripe plates for a summer or beach party
Lemon party table with blue striped plates under lemon print plates, red cups, and a pink striped runner
Palisades Blue Signature Cabana Stripe Plates
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$8.95
Blue and white cabana stripe paper guest towel for a summer, nautical, or beach party table
Blue and orange birthday party table with cabana stripe guest towels, orange plates, and foam dart favors
Palisades Blue Signature Cabana Stripe Guest Towels
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$7.95
Palisades blue cabana stripe cups for a summer or beach party
Palisades blue cabana stripe cups for a summer or beach party
Palisades Blue Signature Cabana Stripe Cups
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$6.95
Palisades blue cabana stripe table runner for a summer or beach party
Palisades blue cabana stripe table runner for a summer or beach party
Palisades Blue Signature Cabana Stripe Table Runner
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$16.95
Light and dark blue cabana stripe large plates for a summer or nautical party
Light and dark blue cabana stripe large plates for a summer or nautical party
Light & Dark Blue Signature Cabana Stripe Large Plates
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$8.95
Light and dark blue cabana stripe guest towels for a summer or nautical party
Light and dark blue cabana stripe guest towels stacked at an angle showing the layered striped edges
Light & Dark Blue Signature Cabana Stripe Guest Towels
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$7.95
Palisades blue large paper party plate in a solid royal blue decagon shape for a summer or nautical party
Angled stack of solid royal blue decagon large plates for a beach, pool, or color block party table
Palisades Blue Signature Large Plates
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$8.95
Midnight blue signature large party plates for a holiday, graduation, or elegant celebration
Midnight blue signature large party plates for a holiday, graduation, or elegant celebration
Midnight Blue Signature Large Plates
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$8.95
Midnight blue signature party cups for a holiday, graduation, or elegant celebration
Midnight blue party cups with gold rims styled with navy Happy Birthday plates, napkins, and confetti
Midnight Blue Signature Cups
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$6.95
Meri Meri mermaid scalloped fringe cups on white background, holographic fringe cups for mermaid parties
Mermaid scalloped fringe cups at a Bonjour Fete mermaid party table with coordinating plates and garland
Mermaid Scalloped Fringe Cups
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$12.00
Meri Meri watercolor clam shell plates on white background, die-cut clam shell shape with soft watercolor print
Watercolor Clam Shell Plates
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$11.50
Meri Meri watercolor clam shell napkins on white background, clam shell shape with soft watercolor ocean print
Watercolor clam shell napkins by Meri Meri flat lay showing the soft blue and pink watercolor design
Watercolor Clam Shell Napkins
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$8.50
Bow and seashell cocktail napkins for a coastal or summer party
Bow Sea Shell Cocktail Napkins
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$6.95
Apres sea cocktail napkins for a coastal or summer party
Apres Sea Cocktail Napkins
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$6.50
Meri Meri Mermaid Favor Bags on white background, iridescent holographic bags with mermaid tail design
Mermaid favor bags at a Bonjour Fete mermaid party with coordinating tableware and iridescent decor
Mermaid Favor Bags
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$20.00
Blue snow cone confetti in a 1 ounce tube with aqua tissue dots and silver flakes for a summer pool or winter party
Blue snow cone confetti tube styled with a snow cone cookie and disco balls for a summer party
Blue Snow Cone Artisan Confetti
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$14.00

An under the sea party is all about ocean color and a little sense of wonder. This collection pulls the whole reef together with ocean and shell tableware, fish and crab napkins, shark and mermaid balloons, and banners to set a watery scene. It works for a first birthday, a pool party, or any celebration that loves the deep blue.

Mix bright corals and aquas or keep it soft and sandy, then add favors and a coordinating banner to finish. For a more specific direction, pair it with our Mermaid party supplies for shimmer, and build a table that feels like a day at the shore.

FAQs

Start with ocean tableware: plates, napkins, and cups in shells, fish, and waves. Add shark or mermaid balloons, a banner, and a cake topper, then favors to send little explorers home. Mixing a few sea creatures keeps the theme broad and playful.

Popular under the sea themes include mermaids, sharks, ocean animals, and classic shells and waves. Many families pick one favorite, like a mermaid or a shark, and use the rest as accents for a full reef of color.

Anchor the table with ocean-print plates and napkins in blues, greens, and corals. Float shark, fish, or mermaid balloons above a banner, and add a few shells or sea creatures down the center. Streamers in wave colors make an easy backdrop for photos.

Explore More Celebrations

Mermaid party supplies for a mermaid theme birthday party.
Mermaid
Nautical party supplies and nautical decorations for a nautical theme party. Lobster party, lobster bake
Nautical | Coastal
Boat paper plate on a scene with blue and red party supplies
Sailing & Nautical Party Supplies & Decorations
Pool party table with blue cabana stripe plates, tropical napkins, and a beach ball balloon for a summer birthday or luau.
Pool & Beach Party Supplies