🐠 Coral Dune🐠

Who says fish can’t have their own secret basement?

The Coral Dune transforms your aquarium’s substrate into a hidden underwater retreat! Designed to sit against the aquarium glass, this unique cave features natural rock-textured walls, a concealed tunnel entrance, and a whimsical staircase rising toward the surface. It creates a cozy hiding place for appropriately sized aquarium residents while giving you a fun peek into their usually hidden world. 🫧

Whether they use it as a quiet retreat, an underwater shortcut, or their brand-new luxury apartment, the Coral Dune brings depth, personality, and a little adventure to your aquascape. Its rocky texture blends beautifully with sand, gravel, plants, stones, and other natural aquarium décor.

✨ PRODUCT DETAILS

• One 3D-printed Coral Dune aquarium cave
• Hidden tunnel-style entrance
• Sheltered underground area
• Detailed rock-textured walls
• Playful staircase feature
• Designed to sit against the inside of your aquarium glass
• Printed in durable PETG
• Available in three standard sizes
• Custom sizing available by request

📏 AVAILABLE SIZES

Small
Width: 275mm Depth: 107mm Height: 68mm

Medium
Width: 341mm Depth: 136mm Height: 75mm

Large
Width: 398mm Depth: 158mm Height: 87mm

All sizes are measured in their normal use orientation.

🎨 AVAILABLE COLORS

• Transparent — has a naturally frosted/translucent appearance when 3D printed
• Black
• White

✨ NEED A CUSTOM SIZE?

Every aquarium is different! If you need the Coral Dune adjusted to better fit your tank or aquarium resident, please message us before ordering. We’re happy to create custom sizes whenever possible.

🏝️ EASY TO ADD TO YOUR AQUASCAPE

Position the open viewing side against the inside of your aquarium glass, surround the exterior and tunnel with substrate, and keep all entrances unobstructed. Please choose a size with openings that comfortably accommodate your aquarium residents.

Please rinse thoroughly with clean water before placing it in your aquarium. Avoid using soap or household cleaners.

This listing is for the Coral Dune cave only. Aquarium, substrate, rocks, plants, and animals shown in the photos are not included.

Because every cave is 3D printed, subtle layer lines and small cosmetic variations are a natural part of the printing process and make each piece unique.

Original design by AquaReef3D. Printed and sold under license by 5 Cats Prints & Things. 🐾