Minecraft wiki entry for Coral_Block, associated text: 1 Obtaining
1.1 Breaking
1.2 Natural generation
1.3 Trading
2 Usage
2.1 Sea pickle farm blocks
2.2 Dead coral blocks
2.3 Note Blocks
3 Sounds
3.1 Normal (Alive)
3.2 Dead
4 Data values
4.1 ID
4.2 Block states
5 History
6 Issues
7 Trivia
8 Gallery
9 References