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Sea Creature Costumes for All Ages

Who Lives in a Costume Under the Sea?

Hold on to your barnacles. This collection of sea creature costumes is going to send you into a tailspin. We have every costume that you've ever seen in your sea animal dreams. Do you often fantasize about being a shark? With our selection, we have a number of costumes that can make that happen. (We can help you if you've dreamed about being eaten by a shark, too.)

Our costumes will have you sleeping with the fishes in no time. You'll see a tuna fish and say, "Hey, I'm just like you." That's because you are, now that you've been transformed into a sea creature thanks to our costumes.

Have an adventure in an Aquarium. Deep in the ocean lays a party paradise just ask Spongebob Squarepants. Be an undersea creature from beneath the waves this Halloween. Create your own Sea World with mighty killer whales and baby sea turtles. Marine animals are not just tasty and delicious, but offer friendship to lonely little mermaids. These are the go-to get-ups for kids in the now. Finding Nemo has never been so easy. Gussy up to go out to your favorite seafood restaurant.

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Adult Black Fish Killer Whale Costume Adult Dolphin Costume Baby Shamu Whale Costume Child Black Fish Killer Whale Costume
Adult Black Fish Killer Whale Costume$89.99 In stock!

Adult Dolphin Costume$34.99 In stock!

Baby Shamu Whale Costume$29.99 In stock!

Child Black Fish Killer Whale Costume$69.99 In stock!

Child Dolphin Costume Crab Costumes Dog Walrus Costume Dolphin Mascot Costume
Child Dolphin Costume$24.99 In stock!

Crab Costumes$49.99 - $69.99 4 items in stock!

Dog Walrus Costume$29.99 In stock!

Dolphin Mascot Costume$499.99 In stock!

Fish Costumes Lobster Costumes Octopus Costumes Seahorse Costumes
Fish Costumes$29.99 - $69.99 7 items in stock!

Lobster Costumes$29.99 - $99.99 6 items in stock!

Octopus Costumes$29.99 - $49.99 3 items in stock!

Seahorse Costumes$39.99 - $49.99 3 items in stock!

Seal Costumes Shark Costumes Toddler Beta Fish Costume Toddler Black Fish Killer Whale Costume
Seal Costumes$39.99 - $49.99 3 items in stock!

Shark Costumes$24.99 - $69.99 6 items in stock!

Toddler Beta Fish Costume$59.99 In stock!

Toddler Black Fish Killer Whale Costume$59.99 In stock!

Turtle Costumes Infant Sea Otter Costume
Turtle Costumes$29.99 - $49.99 6 items in stock!

Infant Sea Otter CostumeOut of stock.

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Sea Creature Hats Crocodile Costumes Beaver Costumes
Sea Creature Hats$9.99 - $29.99 20 hats in stock!

Crocodile Costumes$34.99 - $69.99 6 items in stock!

Beaver Costumes$29.99 - $89.99 4 items in stock!