"Worms are usually heralded by a shuffling noise and visible shaking of blocks. They are all most vulnerable at their heads, so the most efficient weapon against them is precise timing. Worms can freely move through any type of block, including lava (which they are immune to), water, and things such as Wood Platforms. When not moving through a block, they will be pulled down by gravity."@en . . "Worms Family"@en . . "Worms are usually heralded by a shuffling noise and visible shaking of blocks. They are all most vulnerable at their heads, so the most efficient weapon against them is precise timing. Worms can freely move through any type of block, including lava (which they are immune to), water, and things such as Wood Platforms. When not moving through a block, they will be pulled down by gravity. When fighting worms, it is best to stay in relatively open areas or on a platform, as these monsters may come through the ground and surprise you. Additionally, as worms will take damage when any of their sections are hit, weapons which hit multiple sections at once (such as Spears or Explosives) are a good choice for fighting them."@en . .