Pearl Cathedral Coloring Page

Check out this free printable underwater coloring page—an imaginative pearl cathedral scene with kelp pillars, jellyfish, and a lantern fish. Kids love the mix of sea life and hidden piano keys, and the simple line art makes it easy to add your own colors.

What's in the Scene

Look at this dreamy underwater world: a massive pearl cathedral pops up from the sand, its domed arches built from layers of shells. Swirling kelp pillars stand on either side, their fronds bending into gentle arches that frame the entrance. A vertical column of glass‑like jellyfish hovers above, each bell a perfect circle, while a few old piano keys lie half‑buried in the seabed, their black surfaces standing out against the light. At the top, a lantern fish drifts lazily, casting a soft halo that outlines everything.

Ideas for Coloring

You can give the cathedral a pearly glow with blues and soft pinks, or go bold with bright whites and silvers. The kelp works well in varying shades of green, and the jellyfish are perfect for translucent pastel hues. The piano keys are a fun chance to play with contrast—maybe dark black or a deep navy. And that lantern fish? A warm orange or yellow will make its halo pop. Mix and match, and let the sea feel alive on your page.