island map 3d model

Create a highly detailed semi-realistic 3D open-world fishing map on a large island surrounded by ocean. Include 5 blended biomes: North Shore: sandy beaches, grass, rocky coast, docks, shallow clear water. River System: winding river with fast and calm sections, waterfalls, rock bends. Central Lake: large hub lake with depth variation, small islands, underwater logs. Swamp Delta: dark murky branching waterways, dead trees, dense vegetation, low visibility. Deep Ocean: vast open sea with deep gradient and subtle waves. Terrain should be natural with erosion, smooth biome transitions, cliffs, slopes, and organic shapes (no blocky terrain). Water changes by biome: calm lake, flowing river, and wavy ocean with reflections and depth shading. Add realistic vegetation, rocks, and small props like docks and debris. Goal: immersive fishing exploration world with biome-based fish spawns. Style: Roblox/Unreal hybrid, optimized, cinematic lighting.