Mangrove Roots

Mangrove Roots are decorative blocks currently obtained only in the creative inventory. Mangrove Roots, despite being a full block, can be waterlogged and will not flow water out.

Redstone
Redstone circuits can pass its power level through Mangrove Roots and power other redstone components that are adjacent to the block, even when waterlogged. Waterlogged Mangrove Roots follow the same mechanics as any other waterlogged block.

Trivia

 * The Mangrove Roots is the first waterloggable full block in Java Edition.
 * In Bedrock Edition, any block can be waterlogged through editing.

Raízes de mangue 红树根