Slimes do spawn in mangrove swamps, but any regular swamp biome will do. If you are looking for these huge green blobs of slime in your swamp biome, there may be a few things you will have to do first ...

Slimes are rare hostile mobs that spawn in Minecraft. They can either spawn in Swamp biomes during no moon days, or can spawn in slime chunks below a certain Y level. Since the game can be heavily ...