Under the Sea Party Decorations: A Complete Guide

An under the sea party is one of the most magical themes for children. With the right decorations you can turn any room into an ocean adventure filled with sharks, turtles, mermaids and treasure. This guide covers everything you need.

Start With a Colour Palette

Ocean themes work best with blues and greens, accented with sandy neutrals and a pop of coral or gold. Choose two main colours and one accent, then repeat them across tableware, balloons and backdrops.

Tableware and Table Styling

Coordinated tableware ties the theme together. Look for sea creature plates, cups and napkins, then layer them with a blue tablecloth and a few shells or glass pebbles. Browse our party tableware for coordinating options.

Balloons and Backdrops

Balloon garlands in ocean blues and greens make a stunning backdrop for photos. Add a few novelty shaped balloons such as sharks, turtles or mermaids to bring the theme to life. See our novelty shaped balloons.

Favours and Activities

Send guests home with sea-themed favours such as temporary tattoos, stickers and mini toys. A simple fishing game or treasure hunt keeps younger children entertained for hours.