As with any 400 pound wild animal, harp seals are to some degree dangerous. They are carnivores, so they have a good set of teeth designed to rip flesh. Now, if you compared a harp seal to other carnivores of the same size they may rank higher or lower on the dangerous scale due to level of aggression.
A lion weighs around 400 pounds as well and would indeed be much more aggressive than a harp seal.
Most wild animals are. As "Nolapete"says below, clearly there are more dangerous animals to humans, but any wild animal is potentially dangerous.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.