Updated for Java Edition 26.3 (October 2026).
The mangrove swamp is a warm, flooded Overworld biome of mangrove trees standing on tangled roots over mud and shallow green water. It forms on hot coastlines, mostly next to savanna, desert and beaches. Go there for mud, mangrove wood and white frogs. It is rare: in our sample of 300 Java 26.3 seeds, only 13% had one within 1,000 blocks of spawn.
| Dimension | Overworld |
|---|---|
| Where it generates | Hot, wet lowland at sea level, usually next to savanna, desert, beaches, rivers or jungle |
| How common | 0.5% of the surface in our sample (about 1 block in 200) |
| Distance from spawn | Median 2,384 blocks; within 1,000 blocks in 13% of seeds, within 2,000 in 35%, within 5,000 in 92% (our sample) |
| Mobs | Frogs (white, warm variant) and tropical fish; at night slimes, witches, bogged and the usual hostile mobs |
| Notable blocks | Mud, mangrove roots, muddy mangrove roots, mangrove propagules, lily pads, seagrass, firefly bushes |
| Structures | Swamp-style ruined portals, buried fossils; underground mineshafts and trial chambers. No witch huts or villages. |
| Climate | Temperature 0.8, downfall 0.9 (rains, never snows) |
| Biome ID | minecraft:mangrove_swamp |
| Added in | Java Edition 1.19 (The Wild Update, 2022) |
How to find a mangrove swamp
Think hot coast, not forest. In our sample, a mangrove swamp’s edge touched savanna 19% of the time, desert 18%, beach 11%, river 9% and jungle 9%. So follow a river or a coastline through desert or savanna and watch for dark, teal-green water with trees standing in it on stilt-like roots. A regular swamp sits next to forest and plains instead, so if you see oak trees with vines, you are in the wrong one.
These three Java 26.3 seeds put a mangrove swamp within 500 blocks of world spawn. Each coordinate is inside the mangrove swamp, checked at block level.
| Seed | Mangrove swamp at | From spawn | Map |
|---|---|---|---|
2150087560199981668 |
X -534, Z -46 | 482 blocks | Open on the map |
-6326580062154534768 |
X -278, Z 94 | 293 blocks | Open on the map |
6104271629380763551 |
X -218, Z 194 | 292 blocks | Open on the map |
Already in a world? Type /locate biome minecraft:mangrove_swamp (cheats on) for the nearest one, or paste your seed into the biome finder to see every mangrove swamp around spawn. These are Java seeds; the same number on Bedrock gives a different world.
Do slimes spawn in mangrove swamps?
Yes. The mangrove swamp and the regular swamp are the only two biomes where slimes spawn on the surface outside slime chunks. The rules are the same as in a swamp: in Java they appear between Y 51 and Y 69 at light level 7 or lower, most often on full-moon nights and never at new moon. Underground, slimes still need a slime chunk. Frogs help too: a frog that eats a small slime drops a slimeball.
Can witch huts spawn in mangrove swamps?
No. Witch huts generate only in the regular swamp. Witches do still spawn in mangrove swamps at night, as they do in most Overworld biomes, but without a hut there is no fixed spot to build a witch farm around. If you want a hut, look for a swamp instead.
What mobs spawn in a mangrove swamp
Frogs are the only land animal that spawns here naturally. No sheep, pigs, cows or chickens spawn, so bring food. The mangrove swamp counts as a warm biome, so its frogs are the white variant. That matters if you want froglights: a white frog that eats a small magma cube drops a pearlescent froglight. A tadpole takes the colour of the biome it grows up in, so you can raise white frogs here from any frogspawn.
Tropical fish swim in the water, and glow squid can spawn in dark water underground. At night the hostile list is the swamp one: slimes, witches and bogged (mossy skeletons that shoot poison arrows), plus zombies, skeletons, spiders, creepers, endermen and the odd zombie villager. Drowned do not spawn here.
Blocks: mud, roots and propagules
The ground is mostly mud, which you can dig with any tool. Mud gives you three things: packed mud (mud plus wheat), mud bricks (four packed mud), and clay, if you place mud on a block that has pointed dripstone hanging under it. You can also make mud anywhere by using a water bottle on dirt.
Mangrove trees grow from propagules rather than saplings. Propagules hang from the leaves and can be planted on dry land or underwater, and bone meal on mangrove leaves grows a new hanging one. The roots are their own blocks: mangrove roots, and muddy mangrove roots where they reach into the mud. Lily pads, seagrass and grass cover the shallows, and firefly bushes grow next to the water. Dig down and you may hit a fossil.
Blue orchids do not grow in mangrove swamps. They only generate in the regular swamp.
Mangrove swamp vs swamp
They share the slimes, witches and bogged, and almost nothing else. Here is how they compare.
| Feature | Mangrove swamp | Swamp |
|---|---|---|
| How common (our sample) | 0.5% of the surface | 0.99% of the surface |
| Median distance from spawn (our sample) | 2,384 blocks | 1,717 blocks |
| Usual neighbours (our sample) | Savanna, desert, beach | Forest, plains, beach |
| Trees and ground | Mangroves on roots, mud | Oak with vines, grass, clay |
| Water colour | Teal green (#3A7A6A) | Grey green (#617B64) |
| Frog colour | White (warm) | Orange (temperate) |
| Other animals | None; tropical fish in the water | Sheep, pigs, chickens, cows |
| Witch huts | No | Yes |
| Blue orchids | No | Yes |
| Surface slimes, witches, bogged | Both | |
What changed in 2025-26
In Spring to Life (Java 1.21.5, March 2025), firefly bushes started generating next to water in mangrove swamps. They give off light level 2 and show glowing firefly particles in the dark. The mangrove swamp was also listed as a warm biome for the new farm animal variants: pigs, cows and chickens don’t spawn here naturally, but one spawned here (with a spawn egg, for example) comes out as the warm variant.
Source: the official 1.21.5 release notes.
Java vs Bedrock
On Bedrock, since version 1.21.100, one-block-deep water puddles generate in mangrove swamps, and bogged can spawn riding spiders as spider jockeys there (Bedrock 1.21.100 changelog). The seeds and statistics on this page are for Java Edition only.
How we measured
The numbers on this page come from our own seed map engine, running Java Edition 26.3 world generation. We generated 300 random seeds and sampled every 16th block across a 10,240 by 10,240 block square centered on each world’s spawn. “How common” is the mangrove swamp’s share of those samples; “distance from spawn” is how far the nearest mangrove swamp sample was. The seeds above were picked from the same run, and each coordinate was re-checked at block level.
