Jellyfish are... weird. They're clear, slimy, and can sting after death. Sounds perfect for experimentation, so lets weaponize them!

Consider a hypothetical world where jellyfish are extremely common and you can get them cheaply anywhere. In this world, there's a war going on but there's a shortage of materials. Luckily, you have millions and millions of Jellyfish at your disposal (Don't ask why the government has them stored up)!

The government has asked you to design some weapons using those jellyfish as parts.

You can use any part of any type of jellyfish in your weapon, but the main application of the weapon must be based off of jellyfish.

Main list of weapons types:

• Projectile weapons
• fluid weapons (flail, whips, chains)
• rigid weapons (Swords, clubs, staffs)
• Armor/shielding

Of the above types, how effective would the jellyfish based application be, how would it work/be made, and how well would it work (against traditional weaponry (modern) and other jellyfish weaponry)?

Note: Bonus points for coming up with a jellyfish based tank war machine!