Aquatica

Aquatica is an oceanic planet of water. It's the closest planet to Sol, the Cosmorists analog of the Sun, and orbits 0.8718 AU from Sol. It's an underwater themed planet, where the player is constantly underwater, with the oceans being 5 meters deep for all parts of the surface before going to 10 meters when in layer 1 of the caves, and every cave layer after that being a multiple of 10 meters. This is the planet where ambient pressure plays the biggest role, as the deeper the player goes, the higher the pressure. It's also has the highest average surface temperatures in Cosmorists, averaging 34°C on its surface with the equator having particularly high temperatures.

## Biomes

### Surface biomes

The planet has 5 surface biomes to explore as of alpha 0.20.

#### Seafloor Plains

The seafloor plains biome is the usual starting biome for the player. It has the basic resources needed to set up the base. It's characterized by seagrass scattered about, as well as some rocks, ores, and occasional clusters of fine sand. Tuna fish will occasionally spawn here, as well as crabs that move towards the player. It's a common biome that spawns between 30 degrees of the equator to the poles.

#### Coral Reef

The coral reef biome is a warm tropical biome. It's characterized by an abundance of corals, seashells, and some seagrass, but also has a lower concentration of ore than all the other surface biomes except for the barren ocean. Clownfish will commonly spawn here, and they can only be found in this biome. They rarely spawn near the poles due to the fact that this biome needs warmer temperatures, and also never spawn at the equator due to it being too hot.

#### Kelp Forest

The kelp forest biome is a temperate biome, and is characterized by kelp trees densely packed together, and a slightly green sand texture. Tuna fish most commonly spawn here, as well as some hostile crabs. The kelp trees that spawn here will drop kelp, and can be made into cooked kelp, making this biome an ideal source of food for this planet. They generate at most, 50 degrees from the poles before becoming too hit.

#### Frigid Ocean

The frigid oceanic desert is the coldest biome on the surface of Aquatica. It's characterized by a higher concentration of crystalline oxygen, ores, rocks, fine sand, and occasional blue corals. Narwhals spawn here in abundance, as well as containing the only surface corals that glow in the dark. They generate exclusively near the poles, rarely spawning 30 degrees away from both polar regions.

#### Barren Ocean

The barren ocean is a biome that spawns far away from kelp forests. It's characterized by stone rocks and pebbles being the only resource that's readily available with sporadic sand clusters and seashells, a lower concentration of all ores relative to the seafloor plains, and a lack of any creature, both passive and hostile. This biome is ideal to set up a base in if a player wishes to stay away from hostile creatures, but will need a steady supply of resources from elsewhere to remain sustainable. This biome occasionally spawns near the poles, but is the sole biome of the equator, and due to high temperatures that usually exceed 50°C, separates the northern and southern hemispheres from within 30 degrees of the equator.

### Cave biomes

The planet has 4 cave biomes to explore as of alpha 0.20.

#### Oceanic Caves

The oceanic cave biome is by far the most common biome in the caves in any depth shallower than 200 m. It's characterized by a somewhat bright, slightly blue tile base, and ores scattered about.

#### Kelp Forest Caves

The kelp forest cave biome is the second biome that spawns in the shallower layers. This biome will usually spawn below kelp forests, but can also occasionally spawn below frigid oceans if the player is deep enough, but shallower than the mesopelagic layers between layers 21 and 100. It contains some grass scattered about with occasional rocks and ores.

#### Twilight Ocean

The twilight ocean biome is currently the only biome that generates in the mid-depths of the ocean between 200 m and 1 km down. It's ground is dominated by a green-stony ground texture, and blue cave walls that drop aquatic stone. Lanternfish will most commonly spawn in the mid-depths of this biome. As of alpha 0.20, the only ways to protect yourself against the pressure is to place lots of iron oxygenators to prevent rapid oxygen loss, as well as a pressure resistance buff obtained from eating Cooked Tuna.

#### Deep Sea

The deep sea biome is the only biome that spawns in the deeper layers of Aquatica that goes deeper than 1 km. As of alpha 0.20, it's the most hostile biome to any unprepared player, as the intense pressures that always exceed 80 atmospheres will kill the player within 5 seconds, and the 3°C temperatures paired with this pressure will also make the body temperature drop rapidly, giving the player the hypothermia debuff somewhat quickly when unprepared. A pressure resistance buff is vital to survive here, as well as plenty of oxygenators, a cold resistance buff, and heaters when necessary.

In this biome, the anglerfish will spawn here. It'll commonly spawn between layers 150 and 250, but can spawn occasionally outside this range as well. Due to intense pressures, lighting here is dim, and the player will need to place torches tightly packed together to see as well as in caves as on terrestrial planets, and the deeper the player goes, the more torches are needed to light up the caves.

The walls here have a high durability due to the pressure, and a player will need at least a high tier pickaxe, such as a gold pickaxe to break them fast enough.

This is also the only place to obtain deep sea corals. As of alpha 0.20, this is the item with the highest energy density per kilogram at 40 MJ per kg, with each item weighing 0.5 kg. When a player is prepared to deal with the intense pressures, it can be a great source of fuel for the spaceship, as well as furnaces for smelting items.