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Grow animated jellyfish from their anatomy: 23 real and imagined species, translucent glowing tissue, a pulse from real measurements and tentacles simulated in water. For URP in Unity 6.Jellyfish Studio grows animated jellyfish from their anatomy in Unity 6 (6000.3) with the Universal Render Pipeline (URP 17.3): pick one of 23 stock species - real and imagined - or design your own, press Play, and it pulses, swims, sways and trails its tentacles on its own.23 STOCK JELLYFISH, REAL AND IMAGINED- Eight modelled on real species: Pacific sea nettle, moon jelly, lion's mane, purple-striped jelly, crystal jelly, mauve stinger, compass jelly and fried egg jelly.- Fifteen imagined and stylised ones: the glowing Neon Abyss and Ember, the ring-shaped Halo Crown, the bubble-covered Bubble Bloom, the coiled Spiral Bell, cloth-veiled wings, star-shaped rowers and more.- Each is a prefab plus a small design file: drag it in, change it, or start your own from it.DESIGN YOUR OWN- GameObject > Jellyfish Studio > New Jellyfish... creates your jellyfish - its design file and prefab in a folder of its own under Assets/My Jellyfish - from a starting species you pick by its picture.- Every setting sits in its Inspector with a tooltip: Body, Bell, Rim, Tentacles, Oral Arms, Organs, Look, Pattern, Pulse and Detail. Generate rebuilds it and every copy in your scenes; Duplicate... and, for stock species, Reset to Factory are one click away.- Swimming, Behaviour, Physics and Variation apply at once, even in Play mode, and the Scene view previews the pulse and the flow without Play mode.PROCEDURAL ANATOMY- Bells from flat saucers to tall domes and needles - lobed, scalloped, grooved, square like a box jelly or star-shaped with rowing rays - and beyond the bell, rings, bubble clusters and spiral coils.- Tentacles in eight layouts that curl, branch, trail, end in glowing bulbs or carry pearls; oral arms as frilled curtains, veils, tubes or club-tipped trunks; gonads, canals and other organs inside.- Nothing is modelled by hand: on import the design file becomes meshes, pattern maps and materials, identically on every machine.TRANSLUCENT, LIVING TISSUE- Seen by the light it scatters: thick parts read denser, the thin margin glows, edges brighten at grazing angles and a wet sheen mirrors the bright window of the sky.- Bioluminescence that glows steadily, pulses with each stroke, runs round the rim in waves, lights rings of points or flashes at random.- Procedural colour, no texture files: gradients, iridescent films, drifting hues, luminous seams and sparkles - each stock species has its own palette. Optional cartoon shading.SWIMS LIKE THE REAL ANIMAL- A pulse from measurements of real jellyfish that slows with size and stays even - speed comes from deeper, longer strokes, not pauses - and copies of one prefab never pulse in step.- Turns carry inertia, every stroke is a little lopsided, the soft bell sways and the margin ripples between strokes. Stronger than life on request: up to five times the natural stroke rate.- Press Play and they are already swimming: tentacles, arms and veils start in their swimming pose.SIMULATED IN WATER- Tentacles, oral arms and veils are solved with Burst at 120 Hz: water drag that makes them trail and settle, buoyancy, the jet and vortex rings of every stroke, currents and turbulence.- Cloth veils fold, billow and drag like fabric. Dense manes simulate a share of their strands and let the rest follow: the Lion's Mane solves 128 of its 512 tentacles.WHERE IT GOES- Free: it wanders in runs of strokes inside a Swim Area or near where it started.- Path: it steers along a Jellyfish Path shaped with handles in the Scene view - not a rail.- Scripted: your script, Animator or Timeline moves it, and Pulse() strokes on cue.- It avoids obstacles, keeps apart from its neighbours and drifts with Jellyfish Current volumes; a Jellyfish Group places up to five members with varied size, hue and tempo.SAMPLES- 13 demo scenes: a sunlit Aquarium, Deep Glow with the glowing species, Shapes with the bodies beyond the bell, Groups, Path, Script, and seven behaviour scenes - a wall, a ceiling, a room, a narrow gap, two currents and a swim area.- A W A S D flight camera (Input Manager or Input System), a guided tour, light shafts, fog and marine snow that softens into bokeh, ready to reuse.FAST- Built once, on import; at runtime the GPU bends shared meshes from the body's pose and the simulated strand points - no per-frame mesh uploads, no garbage, and the simulation runs on worker threads.- Stock jellyfish are hero quality; for crowds, lower the Detail settings on a copy.DOCUMENTATION- A manual that explains every setting and the scripting API, a quick start and a changelog: Window > Jellyfish Studio > Documentation.More from this family- Real Underwater - screen-space underwater rendering for any water asset: https://assetstore.unity.com/packages/slug/406038- Real Underwater Worlds - complete underwater biomes from presets (coming soon)SupportQuestions, bug reports and ideas: the support thread on Unity Discussions or the support e-mail on this page. If Jellyfish Studio serves you well, a rating or a short review on the Asset Store helps other developers find it - optional, and nothing depends on it.Built and tested with Unity 6000.3.21f1 and the Universal Render Pipeline 17.3 (Forward and Forward+). Built-in RP and HDRP are not supported in this version.Dependencies: none beyond URP - URP 17.3 brings the Burst, Mathematics and Collections packages it uses. No third-party code or content.Number of meshes/prefabs: 23 stock jellyfish prefabs, plus 8 sample prefabs used by the demo scenes; each jellyfish's meshes are generated on import from its .jellyfish design file.Polygon count: 33 k to 472 k triangles (18 k to 241 k vertices, median 108 k) per stock jellyfish - hero quality; lower the Detail section on a copy for crowds.Minimum polygon count: 33 k triangles. Maximum polygon count: 472 k triangles.Number of textures: no texture files are shipped apart from the 23 picker thumbnails; each jellyfish generates its own pattern maps on import.Texture dimensions: generated pattern maps of 1024 x 512 or 2048 x 1024 per jellyfish.Types of materials and texture maps: custom URP shaders for translucent tissue, bioluminescence and procedural colour, built per jellyfish on import; no PBR texture sets.Rigging: No - there is no skeleton; the GPU bends shared meshes from the simulated body pose and strand points.Animation count: 0 animation clips. Animation type list: procedural pulse, swimming and turning, with tentacles, oral arms and cloth veils simulated in water.UV mapping: Yes - generated with the meshes.LOD information: no LOD groups; the Detail section sets the resolution of each design.Simulation: tentacles, oral arms and cloth veils in Burst jobs at 120 Hz on worker threads; a slow frame takes fewer, longer steps.Measured on an RTX 3080 Ti and a Ryzen 9 3950X (Unity editor, Direct3D 12): GPU 0.4 ms (Halo Crown) to 1.4 ms (Lion's Mane, Pacific sea nettle) per jellyfish filling a large part of a 1440p frame; main thread 0.13 to 0.55 ms per hero jellyfish, median 0.19 ms.Rendering: translucent layers sorted per camera (order-independent for rings, bubbles and coils); scene lights, probes and fog; refraction needs the Opaque Texture, glowing species need Bloom; no shadows cast or received; SMAA or FXAA recommended.Scripting: the Jellyfish component (Design, Pose, CurrentPlan, Rhythm, Velocity, WaterCurrent, PathDistance; ResetSimulation(), Settle(), Pulse(), FollowPath()) with live Swimming, Behaviour, Physics and Variation settings; JellyfishDesignFiles in the editor (CreateJellyfish, Duplicate, ResetToFactory, Generate).Demo input: Input Manager or Input System package. Editor interface in English.Documentation: manual, quick start, changelog and third-party notices (Markdown). Download about 3 MB; the first import builds all 23 jellyfish in a few minutes.AI was used as a development aid; no AI-generated image, texture, mesh or audio is shipped in this package. The code, shaders and documentation were written with AI coding assistants under the publisher's direction and tested by the publisher. Every jellyfish mesh, pattern map and material is generated by the package's own code on import from small design files; the 23 picker thumbnails are renders of those jellyfish. The store screenshots and key images are renders of the package with captions added; no image model was used for them. The background music of the promo video was generated with Stable Audio 3; it is not part of the package.