Preserve the exact adult sea turtle identity, shell pattern, head, beak, eyes, proportions and premium painted 2.5D lighting from the input image. Keep the pure black matte mathematically uniform and the camera completely locked. Create one physically convincing five-second underwater idle cycle in place. The front flippers make one coordinated propulsion cycle with visible shoulder articulation, the rear flippers make tiny steering corrections, and the rigid shell follows with believable mass. Do not translate the whole animal across the frame. Complete all visible action by 4.2 seconds. From 4.5 seconds through the final frame, restore and hold the exact first-frame body position, heading, silhouette, flipper phase and motion velocity so direct first-after-last playback has no jump. Preserve at least twelve percent empty margin on every side. NEGATIVE PROMPT: No forward travel, no sideways slide, no unfinished stroke at the final frame, no different head angle at the end, no ping-pong motion, no scenery, water texture, bubbles, camera movement, zoom, cut, fade, opacity change, ghost body, backward swimming, rubber shell, extra or missing flippers, changing face, body morphing, blur, frame exit, text, logo, reels or interface.
Free to start · Generate videos and images with AI in seconds