Lava
100% damage
instant damage
Toxic Acid
150% damage over 3 seconds (stacks)
Radiation fluid
5% + 2%*iteration damage when in 10 blocks distance +
10% + 10%*iteration damage per tick when in fluid
Plasma
100% damage
instant damage
may harm for 100% damage when near it
Mercury
slows you down 4x as much as water
20% damage per tick