Minecraft wiki entry for Ocean, associated text: The cold ocean uses a dark indigo water color at the surface and generates next to cold biomes like taigas and old growth taigas. Like regular oceans and frozen oceans, its floor is made up mainly of gravel. Salmon, cod, squid and dolphins‌[Bedrock Edition only] are able to spawn in cold ocean biomes. The vegetaition in cold oceans also has less seagrass compared to other ocean variants.