Ocean biomes have been reset

Today I created a new world for exploring the oceans, but when I created it and went to an ocean, the biome says "minecraft:ocean", I explored a bit more and it still said the same, and underwater, the vision was just blue.

I teleported to an ocean monument and the biome section said "minecraft:deep_ocean"

 

Where are the warm, lukewarm, cold, etc. Ocean biomes?