Description
Protected by a Spiked Reef Guardian
This Sea Urchin Warning Sign is made for reef keepers who understand that some of the toughest tank defenders never have to move. Quiet, armored, and covered in unmistakable spines, the sea urchin brings personality and attitude to saltwater aquariums, reef rooms, and marine tank setups. Designed in a bold vintage WARNING style, this aluminum metal sign adds humor while giving your aquarium space a classic novelty security look.
Whether displayed above an aquarium stand, in a fish room, or near your reef maintenance station, this durable metal sign makes a unique aquarist gift and a standout addition to saltwater decor. It blends reef realism with bold warning-style design for hobbyists who appreciate marine life with serious boundaries.
ABOUT THIS METAL SIGN
• Premium aluminum metal construction
• UV-protected finish to prevent fading
• Rustproof and weather-resistant for indoor or covered outdoor use
• Bold vintage WARNING layout with high-contrast text
• Rectangular format includes pre-drilled mounting holes
• Square options available without holes
• Sizes available: 9x12, 12x18, 16x24 inches (rectangular)
• Sizes available: 6x6, 8x8, 12x12 inches (square)
• Made to order in Henniker, New Hampshire, USA
Built for reef tanks, marine aquariums, fish rooms, and hobby spaces that deserve personality.
PERFECT FOR
• Saltwater reef tanks and marine aquariums
• Fish room decor and aquarium stands
• Reef hobbyists building a themed setup
• Unique aquarist gifts
• Novelty aquarium wall decor
FREQUENTLY ASKED QUESTIONS
Is this metal warning sign safe for humid aquarium environments?
Yes. It is made from rustproof aluminum and sealed with a UV-protective coating, making it suitable for reef rooms and fish rooms.
Does the sign include mounting holes?
Rectangular sizes include pre-drilled holes for easy installation. Square versions are available without holes.
Can this sign be displayed outdoors?
Yes. The aluminum construction and protective coating make it weather-resistant for covered outdoor areas.
Is this a good gift for reef keepers?
Absolutely. It makes a funny and thoughtful gift for saltwater hobbyists and marine aquarium enthusiasts.
COMPLETE YOUR AQUARIUM WARNING SIGN COLLECTION
Pair this reef-inspired metal sign with other aquatic designs like the Pufferfish Aquarium Metal Sign, Octopus Reef Metal Sign, or Mandarin Fish Security Sign to create a cohesive and bold marine display. Explore the full Aquatic Warning Sign collection to find the perfect metal sign for your reef tank, fish room, or aquarium setup.
Designed and made in the USA by Designs by Linda Nee
© Designs by Linda Nee LLC
Frequently Asked Questions
We typically process and ship orders within 1–2 business days. Once your order is shipped, delivery time depends on the shipping carrier and your location within the United States.
We ship Monday through Friday (business days only). During busy seasons such as holidays, processing and delivery times may take slightly longer due to higher shipping volumes.
If you need your order by a specific date, please contact us at [email protected] before placing your order so we can check available expedited shipping options.
Yes! We offer free shipping on all U.S. orders over $50, including Alaska and Hawaii.
For orders under $50, we offer a flat rate shipping of $5.95 anywhere in the United States.
Free and flat rate shipping do not apply to APO/FPO or international orders, where shipping rates are calculated at checkout.
We accept returns or exchanges within 30 days of delivery for non-personalized items.
Items must be unused and in their original packaging, and refunds are issued after we receive and inspect the return. Please note that return shipping costs are the customer’s responsibility, and original shipping fees are non-refundable.
Because many of our products are made just for you, custom or personalized items cannot be returned or exchanged unless they arrive damaged or defective.
Yes! Many of our products offer personalization options, such as adding a name, custom text, or special details depending on the item.
If a product can be personalized, you’ll see a personalization field on the product page where you can enter your custom details before adding the item to your cart.
If you would like custom text on a design that doesn’t offer personalization, or if you have your own design you’d like us to print, please contact us and we’ll do our best to help.
Yes! We’re happy to work with businesses, organizations, and events that need bulk orders.
If you’re interested in ordering multiple items, custom designs, or branded products, please contact us with the details of your request and we’ll be glad to discuss the options.