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Seaside Themed Halloween Costumes

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Main Content
Sea Siren Girl's Costume

Sea Siren Girl's Costume

$59.99$39.99
Sea Witch Costume for Girl's

Sea Witch Costume for Girl's

$39.99$22.99
Playful Mermaid Kid's Costume

Playful Mermaid Kid's Costume

$49.99$39.99 - $49.99
Teen Sailor Costume

Teen Sailor Costume

$39.99
Mermaid Girls Costume

Mermaid Girls Costume

$24.99$19.99
Women's Deluxe Under the Sea Beauty Costume

Women's Deluxe Under the Sea Beauty Costume

$79.99$29.99 - $39.99
Deep Sea Mermaid Women's Costume

Deep Sea Mermaid Women's Costume

$69.99$29.99 - $69.99
Seahorse Costume for Adults

Seahorse Costume for Adults

$79.99
Undersea Mermaid Costume for Women

Undersea Mermaid Costume for Women

$79.99$49.99
Child Mysterious Mermaid Costume | Sea Creature Costumes

Child Mysterious Mermaid Costume | Sea Creature Costumes

$39.99
Adult Sebastian Costume

Adult Sebastian Costume

$89.99$69.99 - $89.99
Shrimp Infant Costume | Sea Creature Costumes

Shrimp Infant Costume | Sea Creature Costumes

$39.99 - $69.99
Sequined Seahorse Costume for Women

Sequined Seahorse Costume for Women

$49.99$19.99 - $34.99
Shrimp Kids Costume

Shrimp Kids Costume

$49.99
Girl's Toddler Mermaid Costume

Girl's Toddler Mermaid Costume

$29.99
Salty Seas Women's Pirate Costume

Salty Seas Women's Pirate Costume

$39.99$9.99
Blue Whale Kid's Costume | Sea Creature Costumes

Blue Whale Kid's Costume | Sea Creature Costumes

$79.99$59.99
Sea Turtle Toddler Costume

Sea Turtle Toddler Costume

$49.99$39.99 - $49.99
Kids Sea Turtle Costume

Kids Sea Turtle Costume

$59.99$49.99
Shell-a-brate Women's Mermaid Costume

Shell-a-brate Women's Mermaid Costume

$59.99$19.99 - $24.99
Plus Size Under the Sea Mermaid Women's Costume

Plus Size Under the Sea Mermaid Women's Costume

$114.99$99.99 - $114.99
Red Crab Toddler Costume | Kid's Sea Creature Costumes

Red Crab Toddler Costume | Kid's Sea Creature Costumes

$59.99$39.99 - $44.99
Seal Kid's Costume

Seal Kid's Costume

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

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

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

Blue Octopus Kid's Costume | Sea Creature Costumes

$59.99$39.99
Sea Siren Plus Size Costume for Women

Sea Siren Plus Size Costume for Women

$99.99$79.99
Mermaid Costume Infant Bunting

Mermaid Costume Infant Bunting

$39.99$29.99
Adult Gray Seal Costume | Sea Creature Costumes

Adult Gray Seal Costume | Sea Creature Costumes

$59.99$49.99
Plus Size Under the Sea Women's Mermaid Costume

Plus Size Under the Sea Women's Mermaid Costume

$79.99$49.99 - $79.99
Kid's Orange Starfish Costume | Sea Creature Costumes

Kid's Orange Starfish Costume | 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
Sea Siren Costume for Women | Mermaid Costumes

Sea Siren Costume for Women | Mermaid Costumes

$89.99$69.99
Sea Turtle Adult Costume | Sea Creature Costumes

Sea Turtle Adult Costume | Sea Creature Costumes

$69.99$49.99
Deluxe Pirate Wench Costume | Exclusive | Sea Maiden Costume

Deluxe Pirate Wench Costume | Exclusive | Sea Maiden Costume

$69.99$49.99 - $59.99
Mermaid Mafia Men's Costume | Unique Halloween Costumes

Mermaid Mafia Men's Costume | Unique Halloween Costumes

$49.99$24.99 - $29.99
Little Mermaid Live Action Sebastian Infant Costume

Little Mermaid Live Action Sebastian Infant Costume

$49.99
Toddler Shrimp Costume for Kids | Pink Sea Creature Tunic with Antennae and Tail for Halloween or Play Pretend

Toddler Shrimp Costume for Kids | Pink Sea Creature Tunic with Antennae and Tail for Halloween or Play Pretend

$39.99$34.99
Crab Costume for Men | Sea Creature Costumes

Crab Costume for Men | Sea Creature Costumes

$89.99$69.99
Majestic Jellyfish Women's Costume | Sea Creature Costumes

Majestic Jellyfish Women's Costume | Sea Creature Costumes

$89.99 - $114.99
Sultry Sea Pirate Women's Costume | Adult Pirate Costumes

Sultry Sea Pirate Women's Costume | Adult Pirate Costumes

$49.99
Girl's High Seas Captain Costume | Pirate Costumes

Girl's High Seas Captain Costume | Pirate Costumes

$49.99
Stingray Costume for Kids | Sea Creature Costumes

Stingray Costume for Kids | Sea Creature Costumes

$49.99$39.99
The Little Mermaid Baby Posh Ariel Costume

The Little Mermaid Baby Posh Ariel Costume

$49.99$24.99
Venus Mermaid Women's Costume

Venus Mermaid Women's Costume

$114.99$59.99 - $99.99
Pink Seahorse Costume for Girls | Kid's Animal Costumes

Pink Seahorse Costume for Girls | Kid's Animal Costumes

$39.99 - $69.99
Orange Starfish Costume for Adults | Sea Creature Costumes

Orange Starfish Costume for Adults | Sea Creature Costumes

$69.99
Kids Pretty Purple Mermaid Costume

Kids Pretty Purple Mermaid Costume

$39.99$29.99 - $39.99
Women's Under the Sea Mermaid Costume | Mermaid Adult Costume

Women's Under the Sea Mermaid Costume | Mermaid Adult Costume

$99.99

About Seaside Themed Halloween Costumes

Dive into a world of enchantment with our seaside themed Halloween costumes at HalloweenCostumes.com. Perfect for those who dream of ocean adventures, our collection features a variety of costumes that capture the magic of the sea. From whimsical mermaids and mystical sea witches to daring pirates and charming sailors, each outfit is designed to transport you to a coastal paradise. Crafted with vibrant colors, intricate details, and comfortable materials, these costumes ensure you can enjoy your Halloween festivities while embodying your favorite seaside characters. Whether you're attending a Halloween party, a themed event, or simply looking to make a splash, our seaside costumes are sure to make waves.

Our seaside themed costumes cater to all ages and sizes, making it easy for everyone to join in on the fun. With options for kids, teens, and adults, you can create a cohesive group look or let each individual shine in their unique style. Each costume is thoughtfully designed to provide a flattering fit while allowing for easy movement, so you can dance the night away or embark on treasure hunts without a hitch. Embrace the spirit of the ocean with accessories that complement your look, from shimmering seashells to pirate hats. At HalloweenCostumes.com, we believe that every Halloween should be an adventure, and our seaside themed costumes are the perfect way to celebrate the beauty and mystery of the ocean.

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