{
  "hero": "Use case: scientific-educational. Asset type: full bleed cinematic ocean exhibition website hero background, landscape 1536x1024. Create an exquisite photorealistic underwater marine photograph / museum natural history illustration. View just below a turquoise ocean surface: luminous pale turquoise rippling surface occupies top 20%, soft strong natural sunlight shafts entering upper right and diagonal through rich petrol blue water. A single anatomically accurate adult green sea turtle (Chelonia mydas), large and elegant, seen from above and slightly front left, swimming toward the viewer's left, positioned in RIGHT HALF at x=70% y=53%. Olive brown mosaic scute carapace, rounded blunt beak, small head with characteristic scales, two large flat paddle foreflippers in asymmetric swimming pose, two small hind flippers, no extra appendages. Turtle occupies ~40% width. Left 45% is beautiful quiet deep turquoise open water negative space for heading overlay, absolutely no lettering. No coral reef, no ground, no divers, no bioluminescence, no bubbles. Very subtle fine marine particles in the distance. Atmospheric and serene, editorial premium oceanography exhibition, tactile natural textures, realistic restrained colour, high image quality. Bottom edge fades to deep petrol blue #075669. No text, labels, logos, frames or watermark.",
  "vampire": "Use case: scientific-educational. Asset type: scientific museum specimen illustration on PURE BLACK background, landscape 1536x1024. One highly detailed realistic vampire squid Vampyroteuthis infernalis floating centered, filling 75% frame. Accurate anatomy: small rounded dark burgundy mantle, two ear-like fins near upper mantle, two large pale blue eyes, eight arms joined by flowing deep red webbing like a short umbrella cloak, delicate pale fleshy cirri along inner arms not sharp teeth, slender long feeding filament extending subtly to one side. Relaxed partially open web with some curling arm tips; not a jellyfish, no squid long tentacles. Three-quarter view, mantle upper center, web spreading down toward viewer. Rust red and dark wine skin with subtle translucent edge lighting; delicate museum studio overhead light, great volumetric depth and microtexture, restrained pale highlights. No visible emitted light, no glowing dots; any bioluminescent overlay will be added separately in the website. Pure black background for compositing. No text, no labels, no ground, no other animals.",
  "angler": "Use case: scientific-educational. Asset type: scientific museum specimen illustration on PURE BLACK background, landscape 1536x1024. A single anatomically accurate female black seadevil Melanocetus johnsonii in left-facing side profile, specimen fills 70% width. Globular very dark brown charcoal body, huge mouth in anterior face with long fine translucent inward-pointing needle teeth, small round lateral eye high behind jaw, reduced small pectoral fin, short tapering narrow caudal peduncle and small tail to the right, soft dorsal and anal fins at rear. Slender arched fishing rod illicium rises from top of head and curves forward to end in a SMALL PALE spherical esca just above front mouth. Mouth partly open. Scientific realistic natural-history volumetric illustration, detailed subtly rough dark velvety skin, restrained cool soft studio lighting sufficient to read anatomy, not fantasy monster. The lure is pale cream but NOT emitting a glow; interactive website will add glow. PURE BLACK background, no ground, no labels, no text, no other animals.",
  "dumbo": "Use case: scientific-educational. Asset type: scientific museum specimen illustration on PURE BLACK background, landscape 1536x1024. One scientifically accurate dumbo octopus of genus Grimpoteuthis, as a small specimen whose species is not identified. A beautiful translucent pale peach pink gelatinous octopus, rounded bell-like mantle above, exactly two wide ear-shaped lateral fins projecting near the upper sides, two small dark lateral eyes, eight short arms connected by broad delicate umbrella-like web below. A single row of suckers with fine cirri along arms where visible. Three-quarter front view, spreading web gracefully like a skirt, gently curled arm tips, balanced natural anatomy, not cartoon. Delicate soft directional museum studio lighting and realistic translucent gelatinous tissues, detailed but restrained, immense elegance, central specimen fills 70% frame. No glow, no bioluminescence, no jellyfish tentacles, no additional fins. Pure black background for compositing, no labels, text, ground or other animals.",
  "terrain": "Use case: scientific-educational. Asset type: cinematic environment for an interactive ocean trench exhibition, wide landscape 1536x1024. Create an extremely beautiful realistic conceptual deep ocean trench environment, as if an ROV overlooks a small section of rocky slope and fine sediment floor. Dark blue-grey fractured sedimentary rock walls enter diagonally from LEFT and RIGHT, opening a central V-shaped gap into deep navy water. The rounded sediment-covered floor is visible in the bottom quarter with a few small natural stones. One subtle snow-like organic particle drifting near the middle, sparse fine distant suspended particles, no bubbles. The scene is softly illuminated across the whole area by external scientific observation lights, sufficient detail on both slopes and sediment to reveal texture but overall moody dark slate navy #122432 and sea-black. Realistic rich fine rock textures, no geometric polygonal edges, no neon, no glowing organisms, no sunlight, no surface water, no animals, no scuba diver, no submarine, no text, no lettering, no scale or measurements. Landscape 3:2 artwork to be cropped in a 3:1 strip at mid-frame, so the primary composition is the central horizontal strip; include rocky slopes and sediment within that strip. It is an interpretive environment, NOT a photo or map of a specific real trench. Restrained majestic photographic realism."
}