 He has inherited special abilities from Poseidon which include the ability to control water, boats, and ships; to create small hurricanes; to breathe and see clearly underwater; and to talk to horse-like creatures and most aquatic animals.He is also a gifted swordsman using his shape-shifting sword pen.Throughout the series, Percy uses a ballpoint pen named Anaklusmos (Ancient Greek for "Riptide") for battle; the pen can change into a celestial bronze sword and if he loses it, it will always appear back in his pocket.