Ice

Ice is a transparent block formed from frozen water, which it can melt into if broken or exposed to bright light. Its top face is slippery for most entities and causes ridden boats to move at high speeds.

Ice can be easily destroyed without tools, but the use of a pickaxe speeds up the process. However, the block drops only when using a tool enchanted with Silk Touch. If mined without Silk Touch, the block drops nothing and instead is replaced with water if there is a block under the ice block.

Ice is generated by the freeze top layer in blocks with a temperature below 0.15 – the biome's snowfall height. Here, it replaces the top water block if exposed to the surface. This is most common in frozen oceans, frozen rivers, snowy beaches, and less commonly in lakes in any snowy biome or even exposed aquifers in mountains.