How to kill leviathans

The Chelicerate and Shadow Leviathan do not respawn.

The void Chelicerate's do respawn and Ice worms cannot be killed.

There is a somewhat high possibility you may die.

Repair your prawn preferably as much as you can.

Save your game if you are not playing on hardmode.

Keep an eye on the leviathan while repairing your prawn.

1.Repair tool and 3-5 batteries
You NEED this, without it your Prawn suit is basically done for.
2. Prawn Suit
You are going to need this, do not try to fight leviathans without it.

3. Prawn default arm or drill arm
   This matters on which one you like more

The Default arm does more damage but does not have a wide target area and is slower. (I use this)

The Drill arm does less damage but has a higher hit rate and wider target area.
4. Grappling arm
Lets you grapple onto stuff including leviathans. You are going to need this to fight both the Chelicerate and Shadow Leviathan.
5.Prawn Suit jump jet upgrade
Lets you boost vertically further. Makes fighting and getting to leviathans easier.

6. Mk1 and Mk2
   You only need these to fight the Shadow Leviathans. You will also need this for the end game.

Mk1 for Crystal caves and Mk2 for Fabricator Caves.

Optional

Scanner
I'm assuming you would want to scan it .
Reinforced Dive suit
Reduces damage by 50%, you don't need this but can come in handy.
Food and Water
Yes
Medkits
In case you get attacked.
Extra Power Cells
Just in case you run out of power.

I will tell you how to kill the shrimp and some stuff about it

Expect to get attacked by it when first engaging in combat

The chelicerate is much "Harder" to kill than the Shadow leviathan due to the fact that they are not in caves and like to swim to random biomes like cowards, this can be quite annoying due to the fact that sometimes they can swim to the world edge and can swim to other chelicerates. Although the chance of it happening is random as sometimes they will swim from the deep purple vents to the twisty bridges or from the Tree spires to the East Artic into another chelicerate. The chelicerate also does 75 damage to the player and 21-33 damage to the Prawn suit

First what you want to do when attacking a chelicerate is to grapple on to it ( It will most likely do attack animation, this is fine) Then basically start Punching it or Drilling it to death. After the third attack animation you should repair your Prawn as a fourth hit may destroy it. Rinse and repeat and after 10- 20 minutes it should be dead. Also make sure to keep an eye on it while repairing your Prawn

Results may include

1. Death of shrimp
2. Destruction of Prawn
3. Death

Chelicerates in each biome

44m
chelicerate will patrol above a crevice near the eastern edge of the Purple Vents. Enter the Cervice if you need to repair (Most likely going to be in a different biome due to it swimming around once you attack it) or Artic 222m
chelicerate will patrol near a inactive volcano, enter the volcano if you need to repair 104m and 240m
These are the Shrimp twins and are annoying because sometimes they will team up on you and its just annoying. Just don't try to kill them there is no point you will DIE

I will show how to kill this annoying menace.
In my opinion its "easier" to fight due to it being in a cave.

The Shadow Leviathan does more damage but is much easier to fight (Kinda) due to it being in a cave and it getting stuck a lot on the crystals. They do can do about 10 more damage to the prawn suit than the Shrimp but do not worry about that , well keep it in mind.

Location: 591m and 635m

Basically do the same thing with the chelicerate. Grapple on and beat it to death, Keep in mind it will attack you most of the time when you engage in combat. They do 33-42 damage, after the second hit REPAIR your prawn suit preferably near a lot of crystals or in a crevice. KEEP AN EYE ON IT They are also pretty far apart in this biome so you shouldn't have to worry about them deciding to team up on you.

These 2 are quite hard to kill, because they are very close to each other and like to team up to kill you. I wouldn't fight them unless you are up for a challenge. Location: 882m and 890m 1.Death of thing spider worm shadow

2. Prawn gone :c
3. Death

You cannot Kill Ice worms Why would you kill it? Its just living life and not even bothering you. You can even ride it or something. Its not really a threat with the prawn , yeah it can do some EMP attack but its damage is low and it rarely attacks when attacked. It looks stupid It is frozen and sadly is already dead.

Yeah that's pretty much it

Notes:
There is a chance you will die if you actually attempt to kill these things so make sure to save your game before attacking them.

Also repair your prawn and keep an eye on the leviathans or you will die.