Minecraft wiki entry for Swamp, associated text: A swamp in Bedrock Edition, showing huge mushrooms.
Another swamp in Bedrock Edition.
A slime and a swamp hut in a swamp.
View of marsh-like terrain characteristic of swamps.
An example of the temperature variation in swamps, leading to different shades of green for the grass blocks.
Same as the previous image, edited for better visibility.
A river running through a swamp.
A swamp generated next to a frozen ocean.
An oddity at the intersection of a desert biome and a swamp biome.
Another view of a swamp.
Different water colors in swamp biome.
Mangrove swamp close to desert.