Mushroom islands, also referred to as Mushroom fields, are found in the ocean. These islands are usually found in clusters and this biome is considered rare and unique due to their characteristics.
These islands are usually found in clusters and are characterized by their huge mushrooms and mycelium ground. Mycelium blocks replace the common grass blocks found in most other biomes.
The mushrooms generated here are big in size and just enough in number to be a reliable source of mushroom blocks, but low enough not to significantly obstruct vision. Unlike in other biomes, these mushrooms grow in the sunlight.
Unlike other biomes, hostile mobs do not spawn in a Mushroom Field. Additionally, monsters will not spawn in any underground structures within this biome. If spawners are present though, they will still spawn mobs. The most commonly seen mobs are bats and mooshrooms. Mooshrooms are a type of mushroom-covered cow that only live in the Mushroom Fields biome. Similar to normal cows, mooshrooms follow the player when holding wheat, and will breed with other mooshrooms after being given wheat. If a player hasn't slept in three days, phantoms will appear.
The rarer brown variant of mooshrooms are also found here, which are red mooshrooms which are struck by lightning. Brown mooshrooms are pretty much identical to the red variant, with one exception. If you interact with a brown mooshroom while holding a flower, the mooshroom will produce suspicious stew. This is a food item that has a random status effect.
This biome is a lot safer than most other biomes found in the overworld. The terrain is not treacherous and hostile mobs are basically non existent (aside for those spawned from spawners) and the availability of resources make this a habitable biome for all types of players.
A. This biome is considered highly rare by minecraft players.
A. Mooshrooms are just like regular cows but appear different with their bright color and mushrooms growing on their body. They are not a hostile mob.