A scientific cross-section illustration of a rare red coral colony (Corallium rubrum) revealing intricate calcium carbonate skeleton architecture, polymorphic polyp distribution, and microscopic spicule texture networks on aged cream paper, handwritten Latin annotations describing each skeletal growth phase and symbiotic zooxanthellae relationship, measurement scale in millimeters along the edge, soft filtered aquarium lighting from upper left casting delicate shadows, museum archive quality, Pantone-accurate deep crimson skeletal framework with pale pink polyp extensions and ivory calcium carbonate crystalline highlights, composition dynamic to showcase the 50-year-old colony's branching architecture, mood: marine precision capturing deep-sea coral reef wonder, hyperrealistic details of polyp tentacle textures and spicule network patterns visible