Subnatics

1.«The Seamoth» is a compact bathyscaphe for rapid exploration of medium depths. It provides a reserve of oxygen and allows you to install modules (for example, to protect or increase the depth of immersion)

2.«Cyclops» is a huge submarine that works as a mobile base: it can house equipment, store resources, and even grow plants. Suitable for long expeditions to dangerous areas

3.«The Prawn Suit is a walking exo»—suit for working at great depths and in an aggressive environment. It is equipped with manipulators (drill, grab) and jump engines, helps to extract resources and fight off predators.

4.«The Seaglide»is a lightweight portable device for speeding up navigation without using large vehicles. Ideal for short sorties and reconnaissance.

5.«Escape Capsule №5»is a launch vehicle in which the player lands on planet 4546B. It is not used for research in the future, but it is important for plot purposes.

6.«The Neptune Escape Rocket» is a spaceship designed to escape from a planet; its launch completes the main storyline.

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Subnautica takes place on the oceanic planet «4546B». This is a completely water-covered world in the Ariadne arm, where the Alterra Corporation tried to establish a phase gate, and earlier the alien race of the Forerunners conducted research in search of a cure for the Haraa bacterium

Safe biomes:
«Safe Shallows»
(Safe shoals) — starting zone, depth 0-100 m. Lots of basic resources (titanium, copper, limestone), safe fish, ideal for first bases
«Kelp Forest»

• dense thickets of Creepvine, patrolled by Stalkers. Here you can find fragments of the scanner and the first drawings. Depth 0-200 m
  «Grassy Plateaus»
• plains with red grass and nests of Bone sharks. A good source of quartz and limestone. Depth 100-300 m

Medium depths and transition zones
«Mushroom Forest» (Mushroom forest) — giant glowing mushrooms, nearby is the entrance to the Caves of jellyfish mushrooms. Depth 100-300 m
«Underwater Islands» are floating stone massifs with unique resources and rare blueprints. Depth 50-200 m
«Grand Reef» is a vast reef with caves and a Degazi base. There are Squid Crabs here. Depth 200-500 m
«Sparse Reef» is a sandy plain with moderate danger. Depth 100-250 m
«Crag Field» (Rocky field) is a northern rocky area near the border of the "void". Depth 100-300 m

Dangerous zones and "hot spots"
«Dunes»are sandy expanses inhabited by Leviathan Reapers. Depth 50-250 m
«Crash Zone» - the crash site of the Aurora, radiation and debris. Important plot fragments can be found here. Depth 0-50 m
«Mountains» — rocky peaks with geysers and an alien base. Depth 0-500 m
«Bulb Zone» is a bright purple zone with dangerous creatures and valuable resources. Depth 200-600 m
«Blood Kelp Zone» — red algae and ghostly leviathans. Depth 200-500 m
«Sea Treader's Path is a migration route of giant herbivores, with many rare resources. Depth 200-400 m»

Underground and deepwater systems
«Jellyshroom Caves» (Jellyfish Mushroom Caves) are underground caves with purple mushrooms and unique resources. Depth 200-400 m
«The Lost River» is a giant underground river system with several subzones (Junction, Corridor, Bones Field). Depth 500-900 m
«Inactive Lava Zone» — frozen lava tunnels and alien bases. Depth 900-1400 m
«The Active Lava Zone is the most dangerous zone with extreme

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Appearance:
«Huge size». This is one of the largest leviathans in the game. According to fan estimates, an adult could reach about 1,200 meters in length.
«A reptilian head». The creature has a long pointed skull covered with thick scales. The developers emphasized that this scale is so durable that no weapon available to the player can penetrate it.
«Eyes». Three pairs of hypersensitive eyes provide Leviathan with a complete absence of blind spots and allow him to navigate perfectly in the pitch darkness of the depths. The eyes themselves glow orange-red, and their pupils are reptilian.
«Tentacles». Four appendages hang from the muzzle, at the ends of which are photophores (bioluminescent organs). Most likely, they serve to attract prey. But the six appendages on the back of the head do not seem to perform an active function — they just gently sway when moving. At the same time, the skin on the tentacles themselves becomes much more transparent, and the bones show through it. There is a glow gradient along them: white at the base, red in the middle part, and orange at the tips. The markings on the underside of the tentacles are always orange.
«Transparent body». The main part of the body is translucent — the internal organs and skeleton are clearly visible through the skin. At the same time, the body also has bioluminescent elements: large white "bulbs" are located on the sides, and on the underside there are orange dots and branched patterns. The game's data bank explains that this pattern on the belly mimics the night sky.
«The fins». There are small fins along the body. The bones are also translucent in them, and they also have a red-orange bioluminescent glow.

Personality:
The absolute dominant. The Gargantua does not patrol the territory like an ordinary predator — it is on its own and is a threat to everything around. Small creatures in his presence either run away or become prey. In fashion, he can literally "clear" a space with a single movement.

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Appearance:
«The crest on the head». The most noticeable feature is the crest. Interestingly, it was not just an ornament in the idea: the creature used it to break through a thick crust of ice. Because of this, scratches and even wounds from sharp fragments appeared on the ridge.
«Mouth and jaws». The mouth is elongated, and the jaw is protruding, with a row of large sharp teeth. Four mandibles (mandibles) cover the mouth and form a kind of beak.
«The fins». There are eight of them in total: two pointed thoracic, one dorsal, one ventral and four more narrow ones on the tail.
«Coloring». The body is white and gray, with blue stripes running along it, separated by yellow lines.

Personality:
A hunter who uses the Attack through Ice environment. The main feature of his tactics is to break through the ice crust with a ridge to grab prey that is on the surface or at the edge of the ice. This made him unique among Leviathans: he hunted on the border of two environments.

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Appearance:
«Body shape and tail». The body is massive, ending in a forked tail (like many whales).
«Coloring». It has a contrasting coloration: the dorsal side is grayish-blue, and the ventral side is light blue.
«Ridges and spots». On the sides of the body, from the head to the lower back, there are clear ridges. The lower back itself is covered with white spots.
«The fins». Two huge fins, resembling sails, extend from the sides of the body — they are diagonally directed upwards. The upper side of these fins is dark blue, and the lower side is brownish, slightly reflecting light, with small glowing orange spots. Directly under each of these "sailing" fins on the ventral side there is one more, but much smaller one.
«Head» and "horns". A pair of translucent blue "horns" is visible on the top of the head. In fact, they do not perform a decorative function: they work like tuning forks — they capture sound waves in the water. This helps whales to recognize their relatives from afar and even use echolocation when hunting.
«Eyes and photophores». The creature has a yellow iris and large black pupils. There is a pill—shaped photophore right in front of each eye, which is a glowing glandular organ. Another interesting detail: at the tip of each "sail" fin, a small pod is attached to a long tendril, and there is also a teardrop-shaped photophore on its underside.
«Fouling». Shells and other vegetation take root well on different parts of the whale's body.

Personality:
A completely non-aggressive person never attacks. Even if you swim up close or swim right in front of the muzzle, Glow Whale will not show hostility. He does not perceive the player as a threat or prey. Does not protect the territory. He doesn't have a zone that he defends: he calmly shares space with other creatures and with the player.

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Appearance:
«A massive shell». This is the most noticeable feature. The shell looks like a monolithic, lumpy mass — like a piece of underwater reef or rock. It really forms its own mini-ecosystem: corals and other flora grow, which is randomly generated.
«Three movable tentacles». They extend from the back of the body and serve for movement.
«The absence of obvious eyes and mouth». The creature has no visible eyes and no habitual mouth. It is believed that it orients itself in space by perceiving the vibrations of water and the sounds that its relatives make.
«Bioluminescence». Bioluminescent spots are visible on the body closer to the tentacles.
«Sizes». It is one of the largest creatures in the game — it is over 30 meters long.

Personality:
Passivity as the basis of behavior Never attacks. Reef spinners do not perceive the player as a threat or prey. Even if you swim up close or climb on their shell, they don't react in any way. It's a rare leviathan that doesn't deal damage at all.

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Appearance:
«Body and armor». The thick shell is blue-blue in color with bright orange‑yellow bioluminescent patterns. The shell is segmented and looks very durable, as if it were natural armor, not just skin.
«Head and muzzle». The front "leg" is actually an elongated folding muzzle (proboscis), which it uses to collect food from the bottom. Above it are two pairs of eyes: large and smaller, all with noticeable bioluminescence. On the sides of the head are long tendrils, tentacles, which stretch along the entire body and end in thickenings on the tail.
«Limbs». Two powerful hind legs with double segmentation to comfortably step on uneven ground. It is with them that he "stomps": each step can knock out shale growths from the ground.
«Tail and back». The tail is quite massive, but it does not serve as the main propulsion — it is primarily a land‑bottom leviathan that walks rather than swims.
«Coloring and light». Bright orange patterns are not just for beauty: This is bioluminescence, which helps them communicate and see each other in murky water and semi-darkness.

Personality:
«Calm, but with boundaries, he has a clear sense of personal space»: Tolerates it from a distance. If you keep your distance and don't get in the way, he just goes his own way, as if you weren't there.

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Appearance:
«Body». Very long and flexible. The upper part is covered with a thick segmented shell (pseudoexoskeleton) of dark blue color. There are fragments of yellow-orange hue between the segments — this is bioluminescence, which occurs due to chemical reactions of alkali metals with water. But the lower part of the body is devoid of armor: it is smooth, white-gray in color. On the sides along the body there are two rows of small outgrowths (parapodia) — they help to cling to the ice when moving. At the end of the tail is a pair of long thin spikes.
«Head». Its main feature is a massive triangular plate that narrows and turns into a long, thick horn. This horn is incandescent: inside it there are deposits of alkali metals that react violently with water (from melted ice), releasing heat. It is this "hot needle" that allows the worm to tunnel through the ice. There are small grooves on the plate itself — they direct the meltwater directly into the chambers with metals, supporting the reaction during digging. The mouth is located under the horn. It has four curved blades, black on the outside and a red fleshy inside. The inner side of the upper and lower pairs of blades are studded with black spikes-teeth.
«Sensory organs».The Ice Worm has no eyes. He orients himself in space and finds prey by the vibrations of the ice.

Personality:
«An ambush predator, passive waiting without unnecessary movements». Most of the time, he does not prowl in search of prey, but quietly crawls under the surface of the ice through his tunnels or freezes in ambush. His strategy is to save energy and hit only for sure.

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Appearance:
«Body type». Strong, wide.
«Limbs». Four muscular paws. Each ends with a five-toed paw with large claws. There are small webbing between the fingers. On the underside of the front paws there are three plates, similar to those on the back.
«Back and tail». From the area immediately behind the shoulders and almost to the tip of the tail stretches a series of large overlapping plates. As they approach the tail, they gradually decrease in size. The tail itself is long, flattened on the sides and slightly expanded at the tip — this helps when swimming.
«Head». Wide and relatively flat. The mouth is wide and has many thin and long teeth (34 in the lower jaw and 40 in the upper jaw — 74 in total). On the sides of the mouth are large sickle-shaped bone plates that protrude straight forward. Further back on the head there is another structure similar to these plates, but smaller and directed backwards. The eyes are located on the sides of the head and are deeply set.
«Infection». The body is visibly affected by the Haraa bacterium. The scan shows that the visible pustules (boils) are just the visible part of a dense network of bacteria that feed on dead leviathan cells.

Personality:
«No aggression». He does not attack, does not patrol, does not react to the player. It is a static object, part of the location and the plot exposition.

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Appearance:
«Body». It is long and painted in pale brown tones with darker, almost brown stripes - this makes it look as if it is covered with an ice crust or scales.
«Head». Small, triangular shape. The mouth is equipped with many interlocking teeth. Interestingly, there is a hollow cylindrical structure inside the oral cavity — its function in the concept has remained a mystery. There are two pairs of round green eyes behind the mouth.
«Horns and thorns». There are three long horns on the back of the head, each decorated with blue stripes. There are several rows of black spikes all over the body, from the head to the tail itself. The tail ends with four fins.
«The fins». The creature has two pairs of fins. The first one is located about a third of the length of the body from below on the back — these fins are very similar to wings, and the fully developed bone structure of the limb is visible inside them. The second pair is slightly behind the first one. Each of these fins has claws, and such a "limb" hints that the ancestor of this leviathan once had an earthly lifestyle. Between the two upper fins is a large, strong comb-like structure, from which two long spines extend back.
«The chest». There is a protrusion in the center of the chest that resembles the keel of a bird's breastbone.

personality:
Territorial and prudent Master of the icy depths. According to the original idea, the Ice Dragon was supposed to inhabit the Deep Arctic biome and tightly control its territory. He did not patrol chaotically, but kept to key points — for example, near large ice faults and thermal water outlets where prey accumulated.

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Appearance:
«The body (mantle)». Elongated, bluish (turquoise) shade, with red accents and lighter blue patterns on the forehead. The mantle is covered with a kind of plate armor. In a calm state, it is closed, but at the moment of an attack or to intimidate, Leviathan opens it — a purple, glowing soft part is visible under the flaps.
«Head». It has two small eyes with an amber iris and horizontal pupils (in bright light, the pupil folds into the shape of the letter W — this feature was found in some terrestrial cephalopods). There is a large shield above the eyes with a pink bioluminescent pattern that becomes more noticeable when attacked. There are also three pairs of siphons (breathing holes) of different sizes around the head.
«Tentacles». The creature has four long hunting tentacles, which are noticeably longer than the body itself. Their ends are divided into three parts and form "fingers" with different functions: the outer pair is equipped with sharp bio—glass claws, which leviathan uses to pierce and open armored prey (for example, coral crabs or Great Jaw). The inner pair has soft, non-clawed fingers — they deftly manipulate objects and explore the environment. In addition to these four, eight other small tentacles are grouped around the mouth.
«The mouthpiece». The mouth has the shape of a solid beak. It is flanked by two pairs of curved black hooks, as well as a pair of articulated grasping limbs.

Personality:
Curiosity as the basis of behavior Explores, not just hunts. A collector often shows interest in objects that do not look like ordinary prey: small underwater vehicles, base modules, and unusual finds. He can swim up, "feel" them with his soft tentacles and only then decide whether to eat them or leave them.

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Appearance:
«Body». Elongated, streamlined, black in color with smooth skin. There are two rows of 37 small red spots on the sides — they go from the area behind the head almost to the tip of the tail. Under each row of spots there is a shorter row of round holes (gill pores).
«Head». It has the shape of a triangular shield, similar to a scapula. This streamlined shape helps to cut through the water column when attacking. There is a thick plate hidden under the smooth skin — during the mating season, the leviathan uses it as a battering ram to scare off rivals. On the head are three pairs of small black eyes with bright red rings around the pupils.
«Mouth». Located on the underside of the body, just behind the head. It glows blue and is dotted with curved teeth that visually resemble a rib cage (without a sternum). There is a transparent pouch right under the mouth, where recently eaten prey gets in. There are seven pairs of articulated clawed appendages on the sides of the mouth. There are spikes along their inner edge — they help to hold the victim securely.
«Appendages along the body». Seven more pairs of similar appendages extend down the sides of the body. As they approach the tail, they noticeably decrease in size, and the last three pairs look almost like small spines. This gives the impression that these appendages were once walking limbs of an ancestor that lived on the bottom, and then evolved for other tasks.
«Movement and tail». The main propulsion is the large fins in the back of the body. At the same time, the leviathan does not have a tail blade: approximately in the middle of the body there is a large fin (both on the dorsal and ventral sides), and smaller ones are located in front of and behind the ventral fin. The tail itself ends with a red dot.

Personality:
Instant and ruthless reaction Attacks immediately. Unlike creatures that first patrol or check out a threat, the Shadow Leviathan reacts to the player or equipment almost instantly.

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Appearance:
«Body». It was massive, stocky, and covered in some kind of armor. The main color is light brown, but there are patches of blue-green shades.
«Head». Relatively small, but the shape is quite unusual. Two striped tendril-like appendages extend from the nose, at the ends of which green "baits" glow. Bony protrusions resembling a crown are visible on the back of the head. The creature has four eyes (two pairs), and they glow blue; it is assumed that it has binocular vision. There are two large mandibles (mandibles) on the sides of the mouth, and a luminous hollow between them.
«Forelimbs». These are not prehensile paws like those of a Sea Dragon, but two massive limbs similar to flippers, like those found in green sea turtles or a predatory praying mantis. Most likely, they are needed for stabilization during swimming and, possibly, for protection from predators.
«The back part». There is a cluster of seven long, but rather thin tentacles. The largest one is located in the center, and around it there are six smaller ones. There are bright blue bioluminescent "light bulbs" on the inside of the tentacles.
«The feature is on the back». The leviathan has a hole in its back. Its exact purpose in the game is not fully disclosed, but there are versions that it is needed to produce enzyme 42 (which neutralizes the deadly bacterium Haraa) or to lay eggs.

Personality:
«Non-aggressive and peaceful» Unlike other Leviathans (like the Reaper or the Sea Dragon), the Sea Emperor does not attack the player at all. Even if you swim close, he won't hit, grab, or try to destroy the transport. His behavior is based on calmness and observation.

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Appearance:
«Color». The body is mostly dark green. There are purple accents on the webbed limbs and some parts of the head. Many parts of the body are decorated with orange bioluminescent spots and reflections.
«Head». Massive, with reptilian features. The creature has two pairs of glowing orange eyes with white pupils. A crack-like pattern spreads from the pupils to the rest of the eye. At the tip of the muzzle are two short green protrusions with orange glowing tips. A second set of larger fin-like protrusions is located under the lower jaw. A pink tongue and 32 large teeth are visible in the mouth, which are visible even when the mouth is closed.
«Body and protection». There are two long rows of small depressions on the sides of the body, which also emit an orange bioluminescent glow. On the underside of the body, starting from the neck and up to the place where the tentacles begin, there are protective bone plates. There is a large "sail" on the back, just below the shoulders.
«Limbs». The leviathan has two long forearms that end in webbed hands with four fingers. Each finger ends in a huge claw, which is comparable in size to the player's entire body.
«The back part». The main length consists of seven tentacles. They are also covered with orange spots and end in small tentacle-like bulges. The largest tentacle is surrounded by six smaller ones.

Personality:
«Aggression based on the principle of "I see and I hit." If a player or a technique gets dangerously close, the dragon reacts instantly. At the same time, he does not always rush at everything in a row: he often first patrols the zone, and attacks when the target gets into a convenient position to strike. But if you've swum to the mouth or been hanging around for too long, there's no chance.

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Appearance:
«Color». The upper side of the body is red, and the lower (belly) is beige. This is not for nothing: in deep—sea biomes, red light almost does not penetrate (it is absorbed already at a depth of about 15 meters), so this color is an excellent disguise for a predator: from afar, the creature merges with the surrounding darkness.
«Head». It is quite large — it occupies about a third of the total length of the body, along with the jaws. The upper part of the head is protected by a massive plate.
«The jaws». This is one of the most memorable features. The chelicerate has four long, curved mandibles (mandibles) pointing forward. They converge at the base, forming a kind of crushing cavity. Between the mandibles is a small beak-shaped mouth with two rows of teeth pointing forward. When a predator attacks, it opens its jaws in four directions, creating an eerie trap. The mandibles themselves are strong enough to easily crush the bones and muscles of prey.
«Eyes». The creature has four eyes. In the lower part of the head there is a large black eye with a white ring in the center. Above it is a smaller, simpler eye, which does not have such a white ring. Both pairs of eyes are surrounded by a purple rim.
«Body». It is segmented and consists of twelve plates. Long spines grow on the first six plates; a membrane is stretched between them, which forms the dorsal fin. The second plate has a pair of long and thin articulated pectoral fins (partly made of transparent membrane). There is a transparent pelvic fin on the ventral side of the eighth and ninth plates. A small secondary dorsal fin is visible at the tips of the fused eleventh and twelfth plates. The body ends with a telson.
«The exoskeleton». It is thick and segmented, while the plates are flexible and overlap. This design simultaneously protects against the enormous pressure of the depths and preserves the maneuverability needed for hunting.

Personality:
Instant and straightforward aggression.

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Appearance:
«A massive, elongated body». In shape, it resembles a giant deep—sea octopus or a huge snake - the body is long, muscular, without an obvious neck, smoothly turning into a powerful head.
«The head is a hammer». This is one of the most characteristic features: the skull is expanded on the sides, forming something like a hammer or shield. This form most likely helps with ramming attacks.
«Horny growths». The body is covered with large, coarse horny plates or bumps — they add a formidable appearance to the creature and probably serve as additional protection.
«A huge mouth». The mouth is very wide, with many sharp, curved teeth. When the Leviathan attacks, it is able to completely engulf the player or severely damage the transport.
«Bioluminescence». Some parts of the body (for example, individual skin areas or growths) glow faintly in the dark, which helps it to disguise itself in deep—sea, almost completely lightless biomes.

Personality:
«Instant aggression». Unlike some other Leviathans, who patrol the area first, the Devourer attacks almost immediately as soon as it spots a player or vehicle. For him, everything moving in his area is a potential prey.

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«Transparent outer membrane». The body is covered with a soft, bioluminescent shell, through which the internal structure is clearly visible. This is most likely an adaptation to life in deep-sea, dimly lit areas.
«Muscular inner body». It's blue in color, and there are darker blue stripes running through it. The body itself is long and thin, and unlike the outer shell, the inner part has a distinct thin neck connecting the head and trunk.
«Bioluminescence». Pulsating orange stripes are visible on the inner body, as well as many protrusions with orange tips that flash with bioluminescent light.
«Head». There is a small sail on the top of the head. Two long structures protrude from the sides of the head — they resemble the cephalofoil (expanded part of the head) of a hammerhead shark. Cartilaginous outgrowths on the skull form a hammer-shaped thickening: it protects the leviathan itself with powerful ramming attacks.
«Eyes». The creature has 12 yellow bioluminescent eyes.
«Mouth». It is rectangular in shape, and under it is a glowing bait-a barbula.
«The fins». Six fins can be seen on the body, possibly rudimentary.
«Traces». When the leviathan moves in the water, visible footprints remain behind it.

Personality:
«Territorial, not always aggressive». He does not rush at everything: as long as the player does not enter his zone, the leviathan behaves neutrally. An attack begins precisely as a reaction to an invasion. In the recordings of the CCP, scientists conclude that such violent attacks are more likely to protect space than constant hunting hunger.

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Appearance:
«Sizes». It is a giant: together with its fins and jaws, it is slightly longer than the Cyclops submarine (about 55 meters)
«Body». Long, slender and very muscular.
«The fins». It has several pairs: four tail, two thoracic, and two dorsal and a pair of small abdominal ones stretch along the entire body. Many of them (like the back) are red, and these areas are slightly bioluminescent — that is, they glow slightly in the dark.
«Head». A large bone ridge stands out on it — probably it is needed for ramming blows. There is also a large mouth with many sharp teeth and two pairs of eyes with gray sclera.
«The jaws». Maroon mandibles (lower jaws) are visible on the sides of the muzzle. They have a dark gradient and end in large black claws — there are four such "claws" in total. With their help, the leviathan captures the victim and pulls it up to its mouth.
«The scars». There are a lot of scars on the body, especially in the head area, which are probably traces of previous contractions.
«Skin». Bluish-white, the texture is vaguely human.

Personality:
«Aggressive and ruthless». The reaper shows no curiosity or hesitation: if it spots prey, it immediately attacks. The CCP's records explicitly state, "No pity, just muscles, nerves, and teeth."