WYSIWYG Hologram Hammer Coral

The WYSIWYG Hologram Hammer Coral fans out anchor-tipped tentacles that catch the light and flip between neon green, gold, and violet as they sway. This hardy branching Euphyllia brings bold color and sculptural motion to any reef, and it’s forgiving enough for newer reefers. WYSIWYG means "what you see is what you get": the exact coral pictured is the one we’ll ship you.

Quick care overview

• Difficulty: Beginner-friendly LPS — hardy in a stable tank.
• Lighting: Low to moderate; avoid intense light on a fresh arrival.
• Flow: Low to moderate and indirect so the tentacles billow gently.
• Placement: Low to mid rock, spaced away from corals its sweepers could reach.
• Feeding: Mostly photosynthetic; meaty foods a couple of times a week aid growth.
• Parameters: 76–78°F, salinity 1.025, Alk 8–11 dKH, Ca 400–450, Mg 1,250–1,350.

New to Euphyllia? Read our full Hammer & Frogspawn Care Guide for lighting, flow, spacing, feeding, and step-by-step acclimation.

Shipped with care & guaranteed alive. We ship live coral with heat/cold protection and email tracking within 24 hours. Local to Chicagoland? Pick it up at our shop in Wheeling, IL. Backed by expert support from real reefers at Marine Concept Supply.

If your livestock arrives unalived, please contact us within 1 hours of the delivery.

We require images of fish or coral. Once the claim is approved, we will ship a replacement or apply a credit to your account. Image must be of the coral inside the bag. (

Please return all shipments to the address below;

Marine Concept Supply

165 Wheeling Rd.

Wheeling, IL. 60090

At Marine Concept Supply, all sales are final. Due to the sensitive nature of live animals and aquatic products, we do not accept returns or exchanges under any circumstances. No Cancellations Please review your order carefully before completing your purchase.

If you have any questions or concerns about your order, please contact us at shop@marineconceptsupply.com and we'll do our best to assist you.