Under The Sea Children's Costumes

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Child Mysterious Mermaid Costume | Sea Creature Costumes

Child Mysterious Mermaid Costume | Sea Creature Costumes

$39.99
Playful Mermaid Kid's Costume

Playful Mermaid Kid's Costume

$49.99$39.99 - $49.99
Blue Octopus Kid's Costume | Sea Creature Costumes

Blue Octopus Kid's Costume | Sea Creature Costumes

$59.99$49.99
Ocean Octopus Kid's Costume | Kid's Sea Creature Costumes

Ocean Octopus Kid's Costume | Kid's Sea Creature Costumes

$39.99
Stingray Costume for Kids | Sea Creature Costumes

Stingray Costume for Kids | Sea Creature Costumes

$49.99$39.99
Orca Costume for Kids

Orca Costume for Kids

$49.99 - $69.99
Red Crab Kid's Costume | Kid's Sea Creature Costumes

Red Crab Kid's Costume | Kid's Sea Creature Costumes

$79.99$59.99
Kids Sea Turtle Costume

Kids Sea Turtle Costume

$59.99
Bubbly Mermaid Kid's Costume

Bubbly Mermaid Kid's Costume

$39.99$34.99
Shrimp Costume for Toddlers | Sea Creature Costumes

Shrimp Costume for Toddlers | Sea Creature Costumes

$39.99 - $49.99
Scuba Diver Costume for Infants

Scuba Diver Costume for Infants

$39.99$34.99 - $39.99
Dolphin Costume for Kids

Dolphin Costume for Kids

$39.99
Blue Whale Kid's Costume | Sea Creature Costumes

Blue Whale Kid's Costume | Sea Creature Costumes

$79.99
Girl's Toddler Mermaid Costume

Girl's Toddler Mermaid Costume

$29.99
Shrimp Infant Costume | Sea Creature Costumes

Shrimp Infant Costume | Sea Creature Costumes

$39.99$34.99 - $39.99
Kid's Shark Costume

Kid's Shark Costume

$44.99$34.99 - $44.99
Kid's Poseidon Costume

Kid's Poseidon Costume

$59.99
Sea Siren Girl's Costume

Sea Siren Girl's Costume

$59.99$39.99
Red Crab Toddler Costume | Kid's Sea Creature Costumes

Red Crab Toddler Costume | Kid's Sea Creature Costumes

$59.99$49.99
Ocean Octopus Infant Costume | Infant Sea Creatures Costumes

Ocean Octopus Infant Costume | Infant Sea Creatures Costumes

$39.99$29.99 - $39.99
Mermaid Girls Costume

Mermaid Girls Costume

$24.99$19.99
Toddler Scuba Diver Costume | Exclusive Kid's Costumes

Toddler Scuba Diver Costume | Exclusive Kid's Costumes

$39.99$34.99 - $39.99
Shrimp Kids Costume

Shrimp Kids Costume

$49.99
Sea Witch Costume for Girl's

Sea Witch Costume for Girl's

$39.99$22.99
Seal Kid's Costume

Seal Kid's Costume

$49.99$39.99
Kids Pretty Purple Mermaid Costume

Kids Pretty Purple Mermaid Costume

$39.99 - $59.99
Sea Turtle Toddler Costume

Sea Turtle Toddler Costume

$49.99
Orca Mermaid Girls Costume

Orca Mermaid Girls Costume

$44.99$29.99
Kid's Blue Nifty Narwhal Costume | Sea Creature Costumes

Kid's Blue Nifty Narwhal Costume | Sea Creature Costumes

$29.99 - $49.99
Toddler Fish Costume

Toddler Fish Costume

$39.99$34.99
Little Mermaid Ursula Costume for Infants

Little Mermaid Ursula Costume for Infants

$49.99$19.99
Disney Flounder Kid's Costume

Disney Flounder Kid's Costume

$59.99$49.99
Toddler Dolphin Costume

Toddler Dolphin Costume

$39.99$34.99
Ocean Octopus Toddler Costume | Kid's Animal Costumes

Ocean Octopus Toddler Costume | Kid's Animal Costumes

$39.99
Kids Sunny Scuba Diver Costume | Kid's Costumes

Kids Sunny Scuba Diver Costume | Kid's Costumes

$49.99
Kid's Orange Starfish Costume | Sea Creature Costumes

Kid's Orange Starfish Costume | Sea Creature Costumes

$59.99$49.99
Kid's Blob Fish Costume

Kid's Blob Fish Costume

$39.99
Mermaid Costume Infant Bunting

Mermaid Costume Infant Bunting

$39.99$29.99
Child Purple Octopus Costume | Kid's Sea Creature Costumes

Child Purple Octopus Costume | Kid's Sea Creature Costumes

$69.99
Disney Flounder Costume Dress Toddlers

Disney Flounder Costume Dress Toddlers

$39.99
Toddler Dr. Seuss Blue Fish Costume | Dr. Seuss Costumes

Toddler Dr. Seuss Blue Fish Costume | Dr. Seuss Costumes

$29.99$4.99 - $19.99
Little Mermaid Live Action Child Ariel Costume

Little Mermaid Live Action Child Ariel Costume

$39.99$14.99 - $39.99
Little Mermaid Live Action Toddler Scuttle Costume

Little Mermaid Live Action Toddler Scuttle Costume

$39.99$4.99
Little Mermaid Live Action Flounder Infant Costume

Little Mermaid Live Action Flounder Infant Costume

$49.99$29.99
Child Disney Little Mermaid Flotsam and Jetsam Costume | Disney Costumes

Child Disney Little Mermaid Flotsam and Jetsam Costume | Disney Costumes

$74.99 - $99.99
Kid's Swordfish Costume | Animal Costumes for Kids

Kid's Swordfish Costume | Animal Costumes for Kids

$59.99
Little Mermaid Live Action Sebastian Infant Costume

Little Mermaid Live Action Sebastian Infant Costume

$49.99
Adorable Anglerfish Toddler Costume | Kid's Fish Costumes

Adorable Anglerfish Toddler Costume | Kid's Fish Costumes

$34.99

About Under the Sea Children's Costumes

Dive into a world of imagination with our delightful collection of under the sea children's costumes at HalloweenCostumes.com. Perfect for little adventurers who dream of exploring ocean depths, these costumes bring to life the enchanting creatures of the sea. From whimsical mermaids to playful sea creatures, each outfit is designed with vibrant colors and intricate details that capture the magic of underwater adventures. Crafted for comfort and ease of movement, these costumes allow kids to swim through their imagination, whether they're at a Halloween party, a school play, or simply playing dress-up at home. With a variety of styles and sizes, every child can find their perfect ocean-inspired look.

Our under the sea children's costumes are not only fun but also encourage creativity and role-playing. Each costume features high-quality materials that ensure durability, allowing for hours of play without compromising comfort. Whether your child wants to transform into a graceful mermaid, a curious octopus, or a lively crab, our selection offers something for every little ocean enthusiast. These costumes are perfect for sparking imaginative play and storytelling, making them ideal for themed parties, school events, or family gatherings. At HalloweenCostumes.com, we believe that every child should experience the joy of dressing up, and our under the sea collection is designed to make those dreams come true, one costume at a time.

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