In my opinion, the most dangerous sea is the waters of Somalia.
It’s not the weather, the corals, the depth, the magnetic field, or anything that makes it dangerous other than a bunch of heinous bandits or inhumane robbers. They are a group of criminals, thieves, extortionists, kidnappers who do not hesitate to injure or even kill their victims. ships traveling through the Horn of Africa, Somalia must be very careful.
The pirate’s motive is almost always the same, namely asking for a ransom.