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General Information

In the diving suits of lost mariners, these aliens stalk the seabed for the unwary. A vicious swipe by the creature's stronger than steel claws can be enough to send the best divers to the bottom.

A gelatinous green form can be seen swirling around in the face mask. No hint of the real creature can be divined from the often lethal encounters we have had with them.
Source: Terror From The Deep Ufopaedia

Calcinite Autopsy
Calcinite Autopsy
Once the armoured suit is stripped away the Calcinite is revealed to be a huge amorphous blob of protoplasm. No visible brain, limbs or sensory organs exist, a small metallic component resides deep in the liquid body.

Once dead we can only guess at the creature's nature. An inexplicable enigma of our alien enemies.
Source: Terror From The Deep Ufopaedia
Time Units 68 - 101
Health 55
Energy 96 - 142
Reactions 75 - 102
Strength 110 - 136
Bravery 90
Firing Accuracy 48 - 120
Throwing Accuracy 80
MC Skill 0
MC Strength 90 - 112
Front Armour 14 - 42
Left Armour 14 - 42
Right Armour 14 - 42
Back Armour 14 - 42
Under Armour 4 - 12
Hidden Attributes
Melee Accuracy 85 - 126
Energy Recharge 40
Victory Points 20
Standing Height 20
Kneeling Height 15
Intelligence 5
Aggression 2
Other information
Armour category Calcinite
Possible Ranks Terrorist
Unique Attributes Melee Attack

A terror unit that may accompany the Aquatoids on land missions. Fortunately, while its diving suit makes a good disguise, no Terror mission involves civilian aquanauts. So unless you have an agent obsessed with yellow diving suits (and refuses to take off his helmet on land), there should be no problem identifying this armored blob.

The creature's corpse is crucial for XCom weapon research, since it provides information needed to study melee weapons like the Vibro Blade. Unfortunately for the scientists, Aquatoids don't enjoy terror missions much and X-Com commanders may not encounter this green blob until late in the game when Mixed Crew missions occur.


Not much to say here. Calcinites are fairly straightforward: they run up to you and try to claw you to death - leave TUs so your Aquanauts can reaction fire, or use Particle Disturbance Grenades. They don't have ranged weapons, so they're completely helpless against during your own turn. They aren't particularly tough, so any weapon is effective against them. Still, they're more dangerous than the Aquatoids' other (also melee-only) pets, the Hallucinoids, since they're smaller and more aggressive.


The following are some miscellaneous notes on the Calcinite:

  • The Calcinite takes 0.8x damage from Melee attacks, 0.9x damage from Incendiary and Gauss attacks, but 1.1x damage from Sonic weapons.
  • It appears exclusively on land, in the company of Aquatoids or Mixed crews.
  • Those old diving suits they wear actually give better protection than X-com's Diving Suit!

See Also

TFTD Badge Terror From The Deep
Aliens AquatoidGillmanLobster ManTasothMixed Crew
Terror Units Bio-DroneCalciniteDeep OneHallucinoidTentaculatZombieTrisceneXarquid
Data TFTD Alien StatsAlien Rank TFTD Damage Modifiers TFTD Alien Appearance Ratios • SWS/Terror Unit Innate Weapons