Using bone meal on underwater dirt, sand, sand, red sand or gravel has a probability of producing coral, but this feature no longer happens in 1.20.0 or 1.20.10.

Bone meal is consumed, but nothing happens, which is inconsistent with the Java edition.

Bone meal should product coals in warm ocean. (java parity)

The coal fan should also attach to water-logged blocks in the air to survive.