10-second continuous biological transformation from the first frame to the last frame. Begin with the eight separate translucent abyssal organisms naturally moving in the dark water, each maintaining its original anatomy. They gradually detect and approach one another, their fine sensory filaments and soft tentacle-like structures reaching outward, gently wrapping around neighboring bodies and establishing physical contact. The contact spreads progressively as translucent tissues adhere, interconnect and fuse; membranes stretch between organisms, vascular networks merge, internal tissues reorganize and previously separate appendages are gradually absorbed into a shared biological structure. The fusion must be slow, organic and physically plausible, driven by living tissue rather than magical energy or sudden morphing. As the eight bodies become interconnected, a larger central biological mass develops and begins reorganizing itself, with new membranes, elongated sensory filaments, branching vascular structures and broad translucent appendages growing naturally from the fused tissue. Existing structures are gradually reshaped, duplicated only through plausible biological growth, and integrated into a coherent unified anatomy. No teleportation, no instant transformation, no mechanical assembly, no visible seams, no separate bodies remaining at the end. The organism continuously increases in size as the combined biomass reorganizes into one dominant living form. By the final seconds, the transformation settles naturally into the exact biological configuration of the last frame: one much larger translucent abyssal organism with a unified central body, broad transparent membranes, flowing appendages, intricate vascular networks and subtle internal bioluminescence. Preserve continuity of scale, anatomy, translucency, lighting, water particles and deep-ocean environment throughout the entire shot; realistic tissue deformation, fluid dynamics, organic growth and physically coherent biological motion, photorealistic natural-history documentary realism.