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The Mesmer is an aggressive life form belonging to the fauna category. It can be found in deep caves of certain biomes and the Koosh Zone.


The Mesmer is a small, colourful fish with three design patterns; its four large skin flaps are bluish white capable of emitting green bioluminescent glows at night, with violet stripes and are surrounded by a thin translucent blue film.

Its main body is a shimmery purple color, speckled with purple dots, and ends in a glowing greenish-blue structure that splits into two small fins. Its jagged mouth is of a pinkish color and is surrounded by violet skin. Its eyes features horizontal, "S" shaped pupils and yellow sclerae.

When attacking, the Mesmer's head opens up, revealing its soft, slimy body and four pink stalks topped with sharp teeth. These stalks surround its toothless true mouth.


The Mesmer is capable of manipulating the player's mind, causing them to hear the PDA telling them to approach the Mesmer, the messages are as follows:

"It is your primary directive to swim closer to that beautiful creature... Swim closer... Swim closer now... It looks so friendly... Do not resist... Don't struggle... Go closer"

If the Mesmer succeeds in attracting the player, it will attack by opening its body and thrusting it's spiked tentacles towards the player, removing 35% of the health bar, it will then flee.

It can be also seen using this behavior as a self-defense against other larger fauna, fauna of the same size, or even against its own kind. It will also use this as a hunting strategy, able to catch small fauna using it. 

The Mesmer will often home in on either the SeamothPRAWN Suit, or Cyclops and attach itself to their fronts if a player is inside. This does not cause any damage, however.

It should be noted, that if a Mesmer is killed while using it's hypnosis on a creature or the player, its hypnosis will not cease, and will continue until the creature manages to get away or the player runs out of oxygen. The player has a hard time breaking free from the Mesmer when it is using hypnosis.

Energy ValueEdit

MesmerArrow-right (1)BioreactorArrow-right (1)Energy×400
Mesmer EggArrow-right (1)BioreactorArrow-right (1)Energy×50


Future PlansEdit

  •  The Mesmer may be able to hypnotize the player while inside PRAWN Suit or Seamoth at a later date. Currently, this is undecided.

Data Bank EntryEdit


Small, carnivorous lifeform with a unique hunting mechanism that allows it to hypnotize its foes.

  1. Outer Wings:
    The mesmer swims using a number of wings which can be angled up and forwards in the event of an attack. Tiny lenses on the surface can be tilted independently to create mesmerizing patterns capable of subduing the target.
  2. Outer Shell:
    Predators become transfixed, at which point the mesmer opens the jawlike recess in its protective outer shell and eats its victim alive.

Assessment: Avoid


For a more complete gallery, visit Mesmer/Gallery

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