What if your keys could be a little cuter… and a lot more ocean-inspired?
These 3D printed and hand-painted Costasiella keyholders are inspired by one of the most adorable creatures in the ocean—often nicknamed the “leaf sheep.” Small, green, and full of personality, Costasiella nudibranchs have captured the hearts of divers and marine life lovers around the world.
Now, you can carry one with you wherever you go.
Tiny Ocean Magic in Your Pocket
With their soft green tones, leaf-like cerata, and curious little face, Costasiella look like something straight out of a dream. These keyholders are designed to capture that charm in miniature form—turning your everyday keys into a small piece of living ocean art.
Each one is slightly different, just like real individuals found in the wild.
Handmade with Care
Every keyholder is:
- 3D printed with precision
- Individually hand-painted with attention to detail
- Inspired by real underwater observations
- Completely unique
They are crafted during my surface intervals, when I’m not underwater photographing marine life or exploring reefs for Cnymacro.com.
The Perfect Little Companion
These Costasiella keyholders are perfect for:
- Ocean lovers and nudibranch fans
- Divers and underwater photographers
- Cute and original gifts
- Personalizing your keys, bags, or dive gear
Small, lightweight, and full of personality—they’re designed to make you smile every time you see them.
Support Marine Creativity
Each purchase helps support my work on Cnymacro.com, where I share my passion for nudibranchs, marine macro life, and underwater discovery.
By adopting a tiny Costasiella, you’re helping bring attention to the beauty of small and often overlooked ocean creatures.
Custom Orders Welcome
Looking for another species? A different size? A specific nudibranch you love?
Feel free to reach out—I’d love to create your favorite sea slug!