As far as i know only the immediate surroundings of the vent can be deadly,bc of the heat conductivity of water.
Theres also tin and indium which take less to melt.And then you can make a simple underwater forge.
As far as i know only the immediate surroundings of the vent can be deadly,bc of the heat conductivity of water.
Theres also tin and indium which take less to melt.And then you can make a simple underwater forge.