Grand Master Krakatoa (GMK)
A variant of Zoanthids (Zoanthus sp.)

Representative Zoanthidsphoto — a dedicated image of this exact morph isn't available yet.
A premium Krakatoa-lineage morph (Grand Master Krakatoa, GMK) with intense, layered fiery coloration spanning nearly the full rainbow. Often called the 'Holy Grail' of zoanthids and a notoriously slow grower, which adds to its exclusivity.
📜 Backstory
Grand Master Krakatoa (GMK) is sold by World Wide Corals, Vivid Aquariums, Reef Lounge Coral, GHI Corals, and Frag Farm Coral, frequently as single polyps at premium prices (often well over a hundred dollars, up to several hundred per polyp). It is widely described as the 'Holy Grail' of zoas; precise origin is debated but it is a recognized top-tier Krakatoa derivative.
Keeper tips for this variant
A patience piece — give it a stable, undisturbed spot with moderate light and gentle flow. It is hardy like other zoas but grows slowly, so don't expect to rush it with extra light or flow.