Many of the blocks in the game can be placed underwater without being broken, but do not have water flow through them, effectively, making them just look weird underwater. These blocks include every type of door, pressure plate, and gate, the daylight censor, the hopper, farmland, grass path, enchanting table, anvil, cake, redstone activated piston, end portal frame, every type of bed and banner, and sugar cane. These blocks look odd underwater as water does not flow through them but instead is in a tunnel around them.