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Under The Sea Costumes & Accessories

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Plus Size Penguin Costume update
Made By Us Exclusive
Adult Happy Penguin Costume
Sale - 17% Made By Us
£44.99 £37.99
Adult Fish Costume
Sale - 8% Made By Us
£44.99 £41.99
Plus Size Fish Costume
Sale - 19% Made By Us
Womens Sassy Shark Costume
Sale - 25% Made By Us
£59.99 £44.99-£59.99*
Angler Fish Adult Costume
Made By Us Exclusive
£59.99-£74.99
Adult Sting Ray Costume
Sale - 17% Made By Us
£44.99 £37.99
Adult Hammerhead Shark Costume
Made By Us Exclusive
Adult Squid Costume
Made By Us Exclusive
Adult's Great White Shark Costume
Sale - 25% Made By Us
£59.99 £44.99
Adult Blue Octopus Costume
Made By Us Exclusive
Adult Seal Costume
Sale - 17% Made By Us
Deluxe Shark Hat
Made By Us Exclusive
Knit Shark Hat
Sale - 23% Made By Us
Great White Shark Jawesome Hat
Made By Us Exclusive
Adult Shrimp Costume
Made By Us Exclusive
Adult's Fresh Lobster Costume
Sale - 40% Made By Us
£37.99 £22.99-£29.99
Adult Pajama Penguin Costume
Made By Us Exclusive
Seahorse Shimmer Fin Headband Update
Made By Us Exclusive
Holographic Jellyfish Plush Hat
Made By Us Exclusive
Women's Sequined Seahorse Costume
Clearance Made By Us
£37.99 £14.99-£22.99
Adult Inflatable Puffer Fish Costume
Made By Us Exclusive
Goldfish Hood
Made By Us Exclusive
£18.99
Adult's Comfy Shark Costume
Sale - 25% Made By Us
£29.99 £22.99
Shark Attack Handbag
Clearance Made By Us
£22.99 £3.99
Narwhal Hat
Made By Us Exclusive
Sea Monster Sprazy Hat
Made By Us
Light-Up Jellyfish Costume Hat
Made By Us Exclusive
Adult Swordfish Costume
Made By Us Exclusive
Exclusive Plus Size Adult Shrimp Costume
Made By Us Exclusive
Plus Size Axolotl Costume
Made By Us Exclusive
Exclusive Plus Size Great White Shark Costume
Sale - 44% Made By Us
Adult Starfish Costume
Made By Us Exclusive
Pufferfish Animal Costume Hat
Sale - 20% Made By Us
The Lobster Men's Costume
Coming Soon
Made By Us Exclusive
Adult Shark Attack Costume
Out of Stock
Made By Us Exclusive
£56.99
Sequin Fish Purse
Out of Stock
Made By Us Exclusive
Products 1 - 37 of 37
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Dive beneath the waves for an ocean of inspiration with our Under The Sea Costumes & Accessories. When you read "under the sea" we guarantee you hear the voice of Sebastian the crab from The Little Mermaid! So why not transform yourself into the most famous lady of the sea with our brilliant Ariel Costume! For those of you looking for a funny novelty outfit, our Shark Attack Costume will have everyone at the party swimming with laughter! Or maybe you're a big sea food fan? Why not become the universally adored Captain Birdseye? The outfit looks great and is literally made to be worn alongside our Fish Finger Costume! Any couples looking for a unique idea, this is your chance! Our splash-tastic category also caters to the little sea explorers out there. For the ultimate cute costume, the Lil Lobster is one of the sweetest around! 

The sea is full of wonderful creatures, but if you want to become an animal that doesn't live underwater you should check out our Animal Costumes here!