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Under The Sea Party Supplies

Dive into our Under the Sea party supplies, the perfect party theme for kids that love the seaside! Make a splash with colourful under the sea party decorations, balloons, tableware, paper plates, cups, games and more, ideal for an ocean party, mermaid party or something else sea themed! From shimmering fish balloons to treasure hunt escapades, an underwater themed party will have the little ones giggling with glee as they embark on a journey beneath the waves! We’ve got everything you could possibly need for an underwater adventure at your Under The Sea themed party.
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Sale! 27%
Seahorse Paper Cups 230ml - Pack of 8

Seahorse Paper Cups 230ml - Pack of 8

£2.83
£3.89
1 in cart
Under The Sea 8 Person Value Party Pack

Under The Sea 8 Person Value Party Pack

£8.99
1 in cart
Sale! 20%
Assorted Sealife Puzzle Maze

Assorted Sealife Puzzle Maze

£0.23
£0.29
1 in cart
Sky Backdrop Scene Setter Room Roll

Sky Backdrop Scene Setter Room Roll

£18.99
1 in cart
Sale! 26%
Mermaid Mini Pinata Decoration 19cm

Mermaid Mini Pinata Decoration 19cm

£4.99
£6.79
1 in cart
Sale! 13%
Mermaid Shine Pull String Pinata

Mermaid Shine Pull String Pinata

£12.99
£14.99
1 in cart
Mermaid Party Game

Mermaid Party Game

£1.25
1 in cart
Under The Sea 8 Person Deluxe Party Pack

Under The Sea 8 Person Deluxe Party Pack

£15.99
1 in cart
Sale! 21%
Mermaid Sticker Sheet

Mermaid Sticker Sheet

£0.15
£0.19
1 in cart
Sale! 14%
Mermaid Happy Birthday Pull String Pinata

Mermaid Happy Birthday Pull String Pinata

£11.99
£13.99
1 in cart
Sale! 20%
Assorted Sealife Stationery Favour Set

Assorted Sealife Stationery Favour Set

£0.71
£0.89
1 in cart
Sale! 24%
Mermaid Shaped 3D Standard Pinata 52cm

Mermaid Shaped 3D Standard Pinata 52cm

£13.99
£18.49
1 in cart
Sale! 20%
Under the Sea Party Box

Under the Sea Party Box

£0.39
£0.49
1 in cart
Mini Mermaid Puzzle Book 15cm

Mini Mermaid Puzzle Book 15cm

£0.19
1 in cart
Assorted Sealife Pencil with Eraser Top

Assorted Sealife Pencil with Eraser Top

£0.39
1 in cart
Assorted Sealife Mini Notebook

Assorted Sealife Mini Notebook

£0.19
1 in cart
Sealife Pre-Filled Party Favour Bag

Sealife Pre-Filled Party Favour Bag

£1.79
1 in cart
Sale! 13%
Happy Birthday Ocean Pull String Pinata

Happy Birthday Ocean Pull String Pinata

£12.99
£14.99
1 in cart
Mermaid Pre-Filled Party Favour Bag

Mermaid Pre-Filled Party Favour Bag

£1.79
1 in cart
Sealife Sticker Sheet

Sealife Sticker Sheet

£0.19
1 in cart
Assorted Mini Sealife Jigsaw Puzzle

Assorted Mini Sealife Jigsaw Puzzle

£0.19
1 in cart
Sealife Mini Playing Cards

Sealife Mini Playing Cards

£0.49
1 in cart
Sale! 50%
Elastic Shark Shooter Rocket Toy 23cm

Elastic Shark Shooter Rocket Toy 23cm

£1.49
£2.99
1 in cart
Ocean Themed A4 Colouring sheet

Ocean Themed A4 Colouring sheet

£0.08
1 in cart
Sale! 20%
Turquoise Fish Netting 122 x 240cm

Turquoise Fish Netting 122 x 240cm

£7.99
£9.99
1 in cart
Sale! 26%
Inflatable Dolphin 53cm

Inflatable Dolphin 53cm

£1.32
£1.79
1 in cart
Sale! 33%
Blue Shark DIY Premium Balloon Kit

Blue Shark DIY Premium Balloon Kit

£19.99
£29.99
1 in cart
Inflatable Whale 85cm

Inflatable Whale 85cm

£2.59
1 in cart
Inflatable Shark - 35 Inches / 89cm

Inflatable Shark – 35 Inches / 89cm

£2.89
1 in cart
Green Fish Netting 122 x 240cm

Green Fish Netting 122 x 240cm

£9.99
1 in cart
Sale! 26%
Inflatable Penguin - 56cm

Inflatable Penguin - 56cm

£2.64
£3.59
1 in cart
Mermaid Cupcake Cases - Pack of 75

Mermaid Cupcake Cases - Pack of 75

£2.69
1 in cart
Sale! 28%
Sea Friends Food Picks - Pack of 12

Sea Friends Food Picks - Pack of 12

£2.06
£2.89
1 in cart
Pink Fish Netting 122 x 240cm

Pink Fish Netting 122 x 240cm

£9.99
1 in cart
Inflatable Splash Water Slide 16ft

Inflatable Splash Water Slide 16ft

£23.79
1 in cart
Red Fish Netting 122 x 240cm

Red Fish Netting 122 x 240cm

£9.99
1 in cart
Sale! 20%
Natural Colour Fish Netting 122 x 240cm

Natural Colour Fish Netting 122 x 240cm

£7.99
£9.99
1 in cart
Black Fish Netting 122 x 240cm

Black Fish Netting 122 x 240cm

£9.99
1 in cart
Sale! 50%
Blue Fish Netting 122 x 240cm

Blue Fish Netting 122 x 240cm

£4.99
£9.99
1 in cart
Assorted Mini Fishing Game

Assorted Mini Fishing Game

£0.39
1 in cart
Silver 12mm Heart Diamonds Premium Table Gems 28g

Silver 12mm Heart Diamonds Premium Table Gems 28g

£1.59
1 in cart
Sale! 24%
Blank Drum DIY Pull String Pinata

Blank Drum DIY Pull String Pinata

£13.99
£18.49
1 in cart
Pinata Blindfold

Pinata Blindfold

£1.19
1 in cart
Kingsway Fizzy Cola Bottles Vegan Sweet 4g

Kingsway Fizzy Cola Bottles Vegan Sweet 4g

£0.06
1 in cart
Pinata Stick Buster

Pinata Stick Buster

£3.29
1 in cart
Sale! 23%
Number 1 Standard Pinata 50cm

Number 1 Standard Pinata 50cm

£8.99
£11.69
1 in cart
Sale! 50%
Kingsway Blue & White Penguins Gluten Free Sweet 4g

Kingsway Blue & White Penguins Gluten Free Sweet 4g

£0.03
£0.06
1 in cart
Metallic Gold Card Fancy Dress Crown

Metallic Gold Card Fancy Dress Crown

£0.79
1 in cart
Kingsway Beach Mix Gluten Free Sweet 5g

Kingsway Beach Mix Gluten Free Sweet 5g

£0.08
1 in cart
Iridescent Sequin Table Runner 2.13m

Iridescent Sequin Table Runner 2.13m

£14.89
1 in cart
Kingsway Fizzy Blue Raspberries Vegan Gluten Free Sweet 8.5g

Kingsway Fizzy Blue Raspberries Vegan Gluten Free Sweet 8.5g

£0.11
1 in cart
Sale! 20%
Single Cupcake Box

Single Cupcake Box

£0.39
£0.49
1 in cart
Haribo Goldbears Sweet 2.3g

Haribo Goldbears Sweet 2.3g

£0.08
1 in cart
Sale! 20%
Four Cupcake Box

Four Cupcake Box

£1.35
£1.69
1 in cart
Sale! 50%
Haribo Giant Strawb Vegetarian Sweet 11g

Haribo Giant Strawb Vegetarian Sweet 11g

£0.10
£0.20
1 in cart
Haribo Starmix Treat Size Sweets Bag 16g

Haribo Starmix Treat Size Sweets Bag 16g

£0.29
1 in cart
Haribo Supermix Treat Size Sweets Bag 16g

Haribo Supermix Treat Size Sweets Bag 16g

£0.23
1 in cart
Sale! 43%
Six Cupcake Box

Six Cupcake Box

£0.99
£1.75
1 in cart
Sale! 50%
Dots Pink Cupcake Cases - Pack of 72

Dots Pink Cupcake Cases - Pack of 72

£0.74
£1.49
1 in cart
Pink Pinata Buster Stick

Pink Pinata Buster Stick

£2.69
1 in cart
Sale! 20%
White Round Paper Plates 17cm - Pack of 20

White Round Paper Plates 17cm - Pack of 20

£1.99
£2.49
1 in cart
Blue Number 0 Helium Foil Giant Balloon 86cm / 34 in
Requires Inflation

Blue Number 0 Helium Foil Giant Balloon 86cm / 34 in

£3.75
1 in cart
Turquoise Blue Luncheon Napkins 30cm 1Ply - Pack of 100

Turquoise Blue Luncheon Napkins 30cm 1Ply - Pack of 100

£2.39
1 in cart
Sale! 20%
Royal Blue Oval Paper Plates 30cm - Pack of 8

Royal Blue Oval Paper Plates 30cm - Pack of 8

£2.63
£3.29
1 in cart
White Honeycomb Hanging Decoration Puff Ball 40cm

White Honeycomb Hanging Decoration Puff Ball 40cm

£2.19
1 in cart
Silver 25mm Giant Round Foil Table Confetti 50g

Silver 25mm Giant Round Foil Table Confetti 50g

£3.79
1 in cart
Royal Blue Square Paper Plates 22cm - Pack of 14

Royal Blue Square Paper Plates 22cm - Pack of 14

£2.79
1 in cart
Sale! 50%
White Number 2 Helium Foil Giant Balloon 102cm / 40 in
Requires Inflation

White Number 2 Helium Foil Giant Balloon 102cm / 40 in

£2.49
£4.99
1 in cart
Sale! 50%
Silver Number 7 Shaped Air Fill Standing Foil Balloon 76cm / 30 in
Air Fill

Silver Number 7 Shaped Air Fill Standing Foil Balloon 76cm / 30 in

£1.99
£3.99
1 in cart
Powder Blue Square Paper Plates 17cm - Pack of 16

Powder Blue Square Paper Plates 17cm - Pack of 16

£2.19
1 in cart
Powder Blue Honeycomb Hanging Decoration Ball 20cm

Powder Blue Honeycomb Hanging Decoration Ball 20cm

£1.99
1 in cart
Powder Blue Round Paper Plates 22cm - Pack of 16

Powder Blue Round Paper Plates 22cm - Pack of 16

£2.79
1 in cart
Silver Letter B Helium Foil Giant Balloon 86cm / 34 in
Requires Inflation

Silver Letter B Helium Foil Giant Balloon 86cm / 34 in

£5.95
1 in cart
Silver Number 2 Air Fill Foil Balloon 40cm / 16 in
Air Fill

Silver Number 2 Air Fill Foil Balloon 40cm / 16 in

£1.95
1 in cart
Powder Blue Plastic Tablecover 274cm x 137cm

Powder Blue Plastic Tablecover 274cm x 137cm

£1.99
1 in cart
Royal Blue Curling Ribbon - 100 yd / 91.4m

Royal Blue Curling Ribbon - 100 yd / 91.4m

£1.59
1 in cart
Sale! 50%
Number 0 Pastel Blue Air Fill Foil Balloon 35cm / 14 in
Air Fill

Number 0 Pastel Blue Air Fill Foil Balloon 35cm / 14 in

£0.74
£1.49
1 in cart
Caribbean Teal Plastic Table Skirt 426cm x 74cm

Caribbean Teal Plastic Table Skirt 426cm x 74cm

£3.69
1 in cart
White Paper Party Bag - Pack of 12

White Paper Party Bag - Pack of 12

£1.99
1 in cart
Blue Rectangular Reusable Plastic Serving Tray – 9 x 13 Inches / 23 x 33cm – Pack of 3

Blue Rectangular Reusable Plastic Serving Tray – 9 x 13 Inches / 23 x 33cm – Pack of 3

£2.99
1 in cart
Metallic Steel Blue Number 0 Birthday Candle 9cm

Metallic Steel Blue Number 0 Birthday Candle 9cm

£1.29
1 in cart
Sale! 20%
Powder Blue Striped Paper Straws - Pack of 10

Powder Blue Striped Paper Straws - Pack of 10

£1.27
£1.59
1 in cart
Silver Number 0 Helium Foil Giant Balloon 86cm / 34 in
Requires Inflation

Silver Number 0 Helium Foil Giant Balloon 86cm / 34 in

£3.75
1 in cart
White Curling Ribbon - 500 yd / 457m

White Curling Ribbon - 500 yd / 457m

£2.99
1 in cart
Sale! 50%
Pastel Blue Number 0 Helium Foil Giant Balloon 66cm / 26 in
Requires Inflation

Pastel Blue Number 0 Helium Foil Giant Balloon 66cm / 26 in

£1.99
£3.99
1 in cart
Sale! 20%
Blue Party Box

Blue Party Box

£0.39
£0.49
1 in cart
Royal Blue Paper Cups 270ml - Pack of 14

Royal Blue Paper Cups 270ml - Pack of 14

£2.19
1 in cart
Sale! 50%
Pearl Baby Blue 10mm Round Foil Table Confetti 50g

Pearl Baby Blue 10mm Round Foil Table Confetti 50g

£1.89
£3.79
1 in cart
Baby Blue Tissue Gift Paper Sheets - Pack of 10

Baby Blue Tissue Gift Paper Sheets - Pack of 10

£0.99
1 in cart
Blue Number 0 Non Hand Held Sparkler 17cm

Blue Number 0 Non Hand Held Sparkler 17cm

£1.19
1 in cart
Sale! 20%
Fashion Solid White Sand Jumbo Biodegradable Latex Balloons 61cm / 24 in - Pack of 3

Fashion Solid White Sand Jumbo Biodegradable Latex Balloons 61cm / 24 in - Pack of 3

£6.79
£8.49
1 in cart
Silver Damask Paper Banquet Roll - 7m x 1.18m

Silver Damask Paper Banquet Roll - 7m x 1.18m

£5.75
1 in cart
Sale! 49%
Pastel Blue Number 2 Shaped Air Fill Standing Foil Balloon 64cm / 25 in
Air Fill

Pastel Blue Number 2 Shaped Air Fill Standing Foil Balloon 64cm / 25 in

£2.49
£4.89
1 in cart
Turquoise Blue Heart Shape Foil Helium Giant Balloon 91cm / 36 in
Requires Inflation

Turquoise Blue Heart Shape Foil Helium Giant Balloon 91cm / 36 in

£4.49
1 in cart
Sale! 50%
Sky Blue Metallic Latex Linking Balloons 30cm / 12 in - Pack of 15

Sky Blue Metallic Latex Linking Balloons 30cm / 12 in - Pack of 15

£1.49
£2.99
1 in cart
Pastel Blue 4D Globe Foil Helium Balloon 29cm / 11 in
Requires Inflation

Pastel Blue 4D Globe Foil Helium Balloon 29cm / 11 in

£3.49
1 in cart
Sale! 20%
White Crepe Paper Streamer - 24.6m / 81 ft

White Crepe Paper Streamer - 24.6m / 81 ft

£1.19
£1.49
1 in cart
Powder Blue Plastic Reusable Assorted Cutlery Set - Pack of 18

Powder Blue Plastic Reusable Assorted Cutlery Set - Pack of 18

£1.89
1 in cart
Blue Orbz Foil Helium Balloon 38cm / 15 in
Requires Inflation

Blue Orbz Foil Helium Balloon 38cm / 15 in

£4.99
1 in cart
Sale! 18%
Disposable Helium Gas Canister with 50 Baby Blue Balloons and Curling Ribbon

Disposable Helium Gas Canister with 50 Baby Blue Balloons and Curling Ribbon

£34.89
£42.83
1 in cart
Out Of Stock
Shimmering White Satin Luxe Star Shape Foil Helium Balloon 48cm / 19 in
Requires Inflation

Shimmering White Satin Luxe Star Shape Foil Helium Balloon 48cm / 19 in

£1.89
Cool Blue Jumbo Biodegradable Latex Balloon 91cm / 36 in

Cool Blue Jumbo Biodegradable Latex Balloon 91cm / 36 in

£2.29
1 in cart
Iridescent Foil Balloon Weight 175g

Iridescent Foil Balloon Weight 175g

£0.69
1 in cart
Make Up Sponge

Make Up Sponge

£0.49
1 in cart
White Round Plastic Tablecover 213cm

White Round Plastic Tablecover 213cm

£1.99
1 in cart
Silver Number 0 Non Hand Held Sparkler 17cm

Silver Number 0 Non Hand Held Sparkler 17cm

£1.19
1 in cart
Out Of Stock
Snazaroo White Face Paint - 18ml

Snazaroo White Face Paint - 18ml

£4.45
Blue Hanging Decorative Honeycomb Fan 40cm

Blue Hanging Decorative Honeycomb Fan 40cm

£1.99
1 in cart
Blue Star Balloon Weight 140g

Blue Star Balloon Weight 140g

£1.99
1 in cart
Sale! 20%
Cosmic Blue Biodegradable Latex Balloons 30cm / 12 in - Pack of 50

Cosmic Blue Biodegradable Latex Balloons 30cm / 12 in - Pack of 50

£7.99
£9.99
1 in cart
Sale! 20%
Baby Blue Biodegradable Latex Balloons 23cm / 9 in - Pack of 50

Baby Blue Biodegradable Latex Balloons 23cm / 9 in - Pack of 50

£2.39
£2.99
1 in cart
Sale! 50%
Pastel Blue 4D Square Shape Foil Helium Balloon 38cm / 15 in
Requires Inflation

Pastel Blue 4D Square Shape Foil Helium Balloon 38cm / 15 in

£2.24
£4.49
1 in cart
Satin Luxe Pastel Blue Heart Shape Foil Helium Balloon 43cm / 17 in
Requires Inflation

Satin Luxe Pastel Blue Heart Shape Foil Helium Balloon 43cm / 17 in

£1.89
1 in cart
Baby Blue Foil Door Curtain Backdrop 92cm x 244cm

Baby Blue Foil Door Curtain Backdrop 92cm x 244cm

£2.29
1 in cart
Platinum Silver Satin Luxe Round Foil Helium Balloon 43cm / 17 in
Requires Inflation

Platinum Silver Satin Luxe Round Foil Helium Balloon 43cm / 17 in

£1.89
1 in cart
Royal Blue Paper Bag With Handles 21cm

Royal Blue Paper Bag With Handles 21cm

£0.39
1 in cart
Powder Blue Honeycomb Ball Garland - 213cm

Powder Blue Honeycomb Ball Garland - 213cm

£3.19
1 in cart
Blue Star Foil Helium Balloon 51cm / 20 in
Requires Inflation

Blue Star Foil Helium Balloon 51cm / 20 in

£1.49
1 in cart
Sale! 20%
Blue Plastic Pennant Bunting 10m

Blue Plastic Pennant Bunting 10m

£2.07
£2.59
1 in cart
Baby Blue Round Foil Helium Balloon 46cm / 18 in
Requires Inflation

Baby Blue Round Foil Helium Balloon 46cm / 18 in

£1.49
1 in cart
White Heart Shape Foil Helium Balloon 46cm / 18 in
Requires Inflation

White Heart Shape Foil Helium Balloon 46cm / 18 in

£1.49
1 in cart
Out Of Stock
Sale! 27%
Number 3 Standard 3D Pinata 54cm

Number 3 Standard 3D Pinata 54cm

£11.99
£16.50
Out Of Stock
Haribo Freaky Fish Vegetarian Sweets 100g

Haribo Freaky Fish Vegetarian Sweets 100g

£1.49
Out Of Stock
Kingsway Baby Dolphin Gluten Free Sweets 100g

Kingsway Baby Dolphin Gluten Free Sweets 100g

£1.09
Out Of Stock
Frisia Rainbow Twister Vanilla Mallows 100g

Frisia Rainbow Twister Vanilla Mallows 100g

£2.19
Out Of Stock
Sale! 29%
Disposable Helium Gas Canister with 30 Metallic Silver Balloons and Curling Ribbon

Disposable Helium Gas Canister with 30 Metallic Silver Balloons and Curling Ribbon

£22.59
£31.89
Out Of Stock
Chrome Blue Latex Qualatex Balloons 28cm / 11 in - Pack of 100

Chrome Blue Latex Qualatex Balloons 28cm / 11 in - Pack of 100

£39.99
Out Of Stock
Fashion Solid Caribbean Blue Biodegradable Mini Latex Balloons 13cm / 5 in - Pack of 100

Fashion Solid Caribbean Blue Biodegradable Mini Latex Balloons 13cm / 5 in - Pack of 100

£7.95