170+ Splashy DIY Under the Sea Costumes for Halloween

Adorable Homemade Baby Mermaid Costume

This is my Homemade Mermaid Costume. I bought a gold cloth and sewed it. For the head, I bought a hat with a gold hair and some accessories on it.

Cool Octopus Costume

My son wanted a giant octopus costume for Halloween. I started with a hooded sweatshirt. I used three pairs of ladies heavy tights for the tentacles. I cut both ends of the tights and sewed one end of each tentacle to a point. I then stuffed each tight with stuffing. Next I cut out suckers … Read more

Pretty Homemade Jellyfish Costume

My Homemade Jellyfish Costume was made with metallic fabrics, pearls, jewels, and feathers. It also included LED lights that lit up on the inside of the Umbrella. Matched with a silver, sparkly outfit and elaborate, shimmering makeup. This costume has been my best yet!

Coolest Homemade Goldfish Halloween Costume Idea

I originally saw this homemade goldfish Halloween costume idea in Woman’s Day magazine. The design was for a toddler, but it was easy enough to customize it to a larger size. The base of the goldfish costume is a Hanes men’s 3XL orange hooded sweatshirt. I wanted it to be extra roomy, which is an … Read more

Aquarium Costume

This was one of my better homemade box costumes. I am always trying to think of what can be made from a box. I have fans every year that can’t wait to see what I come up with! Everyone at work knows me for looking for that “right” box from our warehouse. When September comes … Read more

Coolest Mermaid Halloween Costume

It was a lot of work but it was totally worth it. I had wanted to be a mermaid before but never found a mermaid Halloween costume that was what I had in mind, so with the little money that I had and a lot of trial and error I completed my perfect mermaid look! … Read more

Cool Homemade Mermaid Halloween Costume

This Homemade Mermaid Halloween Costume was a blast to make. My daughter decided she wanted to be a mermaid for Halloween. I bought a basic pattern for a mermaid tail from Walmart. We bought some glittery fabric and sewed it up. I bought some iridescent fabric and sewed that on the bottom for the fins. … Read more