Looking for a seed that has you spawn on or near a large island with a wide waterway separating it from the mainland. Bedrock edition, map colour meanings in body text.

Dark grey for stony shore, dark green for forest, light yellow for beach, green for any flat grassy area, pale green for birch forest, icy grey for mountain biome, and purple for any extra biomes. Also the border is just to make it look like a map.