Deep Lukewarm Ocean biome — Minecraft

Overview

Deep lukewarm ocean is the warm-water deep variant, with a sand floor rather than gravel and enough light reaching down that the seagrass looks green rather than grey. It is the friendliest of the deep oceans to work in: dolphins spawn here, and swimming next to one gives you Dolphin's Grace, which roughly triples your swimming speed and is the single best way to cross open water without an elytra. Tropical fish, pufferfish, cod and squid all spawn, so food and the pufferfish for a Water Breathing potion are both available on site. Ocean monuments generate in this biome as in every deep variant, and warm ocean ruins — the sandstone kind — appear on the floor with their own chests. What deep lukewarm ocean does not have is coral: coral reefs generate only in the shallow warm ocean, so if you want coral blocks you need to swim to the adjacent warm biome. Sea pickles and the occasional patch of sea grass light the floor faintly, which helps when you are looking for the dark silhouette of a monument. It borders lukewarm ocean, warm ocean and deep ocean, and the sand floor makes the boundary with a gravel-floored cold ocean obvious from above.

Ocean monuments for prismarine and sponges, pufferfish for Water Breathing potions, tropical fish for axolotl feeding and dyes, and dolphins for Dolphin's Grace when crossing distance.

Deep Lukewarm Ocean is a temperate biome that generates in the Overworld. Its base temperature of 0.5 places it in the temperate band, which controls whether water freezes, whether it rains or snows, and which passive mobs are allowed to spawn there.

Weather reaches Deep Lukewarm Ocean: it rains during storms, so crops grow and cauldrons fill on their own.

One generated structure can appear here, among them Ocean Monument.

6 mobs name Deep Lukewarm Ocean specifically among their spawn biomes: Cod, Dolphin, Elder Guardian, Guardian and 2 more.

Ocean biomes vary by temperature: warm oceans carry coral and tropical fish, cold and frozen ones do not. Every ocean can hold a shipwreck, a ruin or buried treasure, and the deep variants are where ocean monuments generate.

How to get it

Deep lukewarm ocean generates in the warm half of the ocean temperature bands, often within 1,000 blocks of a jungle or desert coast. Ocean explorer maps cost roughly 13 to 20 emeralds from a cartographer.

Tips

Swim beside a dolphin and Dolphin's Grace lasts 5 seconds after you leave it, so hop between them across long stretches.
Feed a dolphin raw cod or salmon and it swims towards the nearest shipwreck or ruin, which is a free structure locator.
Bring 1 pufferfish home: it is the only ingredient for Water Breathing, and 1 fish brews 3 bottles at once.
Never attack a dolphin — every dolphin in a 16-block radius turns hostile and they are faster than you are.

Climate and generation

Deep Lukewarm Ocean has a base temperature of 0.5, which puts it in the temperate band. Temperature is not a thermometer reading — it is the single number that decides snow versus rain, whether water freezes over, and what colour the grass renders.

Above 0.15 water stays liquid and any precipitation falls as rain.

Property	Value	What it changes
Temperature	0.5	Decides whether rain falls as snow, whether water freezes, and the grass and foliage tint.
Precipitation	Yes	Cauldrons fill on their own and farmland stays hydrated during a storm.
Dimension	Overworld	Sets which mobs, structures and ores can generate at all.
Grass and water tint	#7BA4FF	The colour the game applies to grass, leaves and water in this biome.

Properties

Grass and water tint: #7BA4FF
Structures generating here: 1

Mobs in Deep Lukewarm Ocean

Cod, Dolphin, Elder Guardian, Guardian, Pufferfish, and Tropical Fish name Deep Lukewarm Ocean specifically as a spawn biome, so this is where you go to find them.

On top of those, the mobs that spawn in open terrain anywhere in the Overworld can appear here too, given the right light level. Mobs that only come from a structure or a spawner — breezes from trial chambers, blazes from fortresses, evokers from mansions — are deliberately not in this list.

Also spawns throughout Overworld

Structures found here

One structure can generate in Deep Lukewarm Ocean: Ocean Monument.

Ocean Monument — A prismarine fortress on the deep ocean floor, guarded by three elder guardians that inflict Mining Fatigue III across a fifty-block radius so you cannot simply mine in.

Guides and tools that cover this

Frequently asked questions

Where do I find Deep Lukewarm Ocean?

Deep Lukewarm Ocean generates in the Overworld. A locate command finds the nearest one instantly; without cheats, exploring in one direction and watching the F3 screen's biome line is the reliable method.

What spawns in Deep Lukewarm Ocean?

Cod, Dolphin, Elder Guardian, Guardian, Pufferfish and 1 more spawn here specifically, and the usual Overworld mobs can appear given the right light level.

Does it rain in Deep Lukewarm Ocean?

Yes — as rain. Cauldrons fill on their own during a storm and farmland stays hydrated.