The Oceanbiome is one of the four main biomes currently existing in Mope.io, alongside Land, Arctic and Desert. It consists of two regions of water located on the left and right sides of the map, and was initially released in-game on November 21, 2016.
There are two Oceans on the map, with both being on the far left and right-hand sides of the map.
Each Ocean is connected by two rivers that run horizontal on the map.
The biome consists mostly of water, with a few sandhills scattered about. As such all animals that belong to this biome naturally are strong swimmers.
Most ocean animals also are slow on dry land, and will quickly lose water there. By extension, they cannot climb any hill forms whatsoever. The only exceptions are the Crab, Flamingo, Turtle, Pelican and King Crab, all of which are also able to climb on sandhills.
Due to the Ocean constantly refilling the water bar of any animal that is on it, water bars are mostly irrelevant.
At the edge of the Ocean, there are beaches that act as a border between other biomes. It passively provides water, and most commonly houses many Starfish.
The most common food sources are kelp, seaweed, plankton, conch shells and clams (see the table below for more information).
Like Hiding holes, caves are usable by all animals, excluding black dragon and king dragon. They act as normal but if out of air, your health bar will slowly be reduced. Also, unlike holes, you can collide with other players and predators cannot kill prey once inside one.
Trout The Trout is the second spawning ocean animal. It has a sprint ability by pressing W, and will gain some speed momentarily but loses a bit of water in the process. Alike most ocean animals, it moves swiftly in the ocean but is slow on land.
Crab The Crab is the third animal that can be chosen in the Ocean biome. Unlike most other ocean animals, crabs can survive on dry land-masses, and thus are able to climb hills and rocks. Their special ability is to hide in a shell, which reduces damage but slows movement for the Crab. Additionally, crabs do not have tails, and can't be bitten by prey.
Sea-horse The Sea-horse is the fourth animal that can be chosen in the ocean biome, and has a sprint ability by pressing W, alike the Trout and Cheetah. Like all others, it is slow on land and fast in water.
Squid The Squid is one of the fifth animals that can be chosen in the Ocean biome. When it is injured by another entity, it can squirt ink. Henceforth, it is also immune to ink.
Flamingo The Flamingo is another of the fifth animals that can be chosen in the Ocean biome. When in water bodies, by holding W it can dig for food, producing Plankton and AI animals. If holding W from a hill, the Flamingo will fly for a time. It can climb hills and survive well on dry land for an Ocean animal, but cannot dive underwater.
Jellyfish The Jellyfish is one of the sixth animals that can be chosen in the Ocean biome. Unlike others of its tier, the Jellyfish has no special ability. However, any prey or A.I. animal that gets close to the Jellyfish's tentacles/tail will be stung, taking away some of its health and XP. Like other Ocean animals, it is fast in water and slow on land.
Turtle The Turtle is the seventh animal that can be chosen in the Ocean biome. It is able to climb on hills and rocks, and survive on dry land for long periods of time. By holding the W key, the Turtle can hide in its shell if it is on dry land, dramatically reducing the damage from any attack. However, it cannot move very fast when hiding.
Stingray The Stingray is the eighth animal to spawn in the Ocean biome. By pressing W, the Stingray will let out an electric shock, stunning any animal nearby. It will show up as a slightly neon-silver color, with a small lightning bolt on one side.
Pufferfish The Pufferfish is the ninth animal that can be chosen in the Ocean biome. As with most other ocean creatures, it moves fast in water and slow on land, quickly losing water there. By holding W, it will inflate; when touched the Pufferfish will stun and damage any animal that come into contact with it. When the key is released, it will exhale many water droplets.
Swordfish The Swordfish is the tenth animal spawning option for the Ocean Biome. By pressing W, the Swordfish has a Charge ability, much alike the Rhino and Warthog. It speeds the player up and stuns prey, and takes away about half the prey's health and a bit of health from the predator.
Pelican The Pelican is another tier 10 ocean-spawning option. By pressing W, the Pelican will scoop water into its mouth, picking up prey and stunning predators or equivalents. After about 5 seconds, the Pelican will begin to fly, and when landing, it will drop the water it carried. If it drops on an animal, it will be stunned for a few seconds. It can also climb hills.
Octopus The Octopus is the eleventh animal spawning option for the Ocean Biome. By pressing W, it disguises as a Healing Stone, hiding hole, snail, or an ocean food. When touched by another animal, it produces ink, stunning them if they aren't immune to it.
Shark The Shark is the 12th Ocean animal. Like usual, it is fast in water and slow on land, losing water rapidly when on there. By pressing W, it can inflict a bite attack on prey: the prey will be shaken around, and multiple small meat pieces will drop off. After the Shark lets go, the victim will bleed and lose a little extra health.
Killer Whale The Killer Whale is one of the 13th animals that spawns in the Ocean biome. By pressing W, it uses its 'Cause Wave' ability, which sends 2 shockwaves that stuns any animal that comes in contact with it, also forcing them backwards. It will also slightly damage prey, but not too much.
Blue Whale The Blue Whale is one of the 14th animals that spawns in the Ocean biome. By pressing W, it will use its Tail Slap ability, like the Elephant's, except coming out from behind rather than in front. After the slap, there will be a 'shockwave' It can kill bees and snails with one slap, and stuns any animal that comes too close. When you dive, you produce food, like the Killer Whale.
The Kraken The Kraken is the fifteenth animal spawning option for the ocean biome. By pressing W, it will release a whirlpool that traps all animals below it. If it is a predator or equivalent, it will get stunned instead. It can't be stung by a Jellyfish and is immune to ink.
King Crab The King Crab is another one of the fifteenth animals in the ocean biome. By pressing W, it will smash the King Crab's arms and will create a wave, stunning the animal and taking away health from it. It can also climb hills and rocks, and unlike most other ocean animals, can survive on dry land for longer periods of time without water.
Sea Monster The Sea Monster is the 16th animal in the Ocean. Like other ocean animals, it moves fast in water and slowly on land, quickly dehydrating on any dry surface. Unlike any other animal, the Sea Monster has an 'Air' bar instead; it will decrease whenever the Sea Monster is diving. However, when on the ocean surface, the Sea Monster suffers periodical burns about every 5 to 6 minutes. When pressing W, the Sea Monster creates a huge whirlpool that sucks in any animal, like the Kraken. Animals stuck inside it will appear to be diving, but won't actually be.
Snail The Snail is an AI (artificially controlled) animal that spawns in the Ocean. Like most aquatic creatures, it can only survive in water, and will quickly lose it when on dry land. Snails move at a fairly slow pace compared to other animals, and are only able to eat Plankton and the most basic food sources. They are able to dive, and can also tuck their head into their shell if threatened, which decreases damage done.
The Ocean background prior to April 9, 2017.
A mini Kraken in the ocean. The T-Rex is standing on the shoreline.