"Our journey has been forced to take an unexpected detour; it seems that the island I mentioned sighting in my last entry is a leviathan, and the naturalist has warned us to give it a wide berth in case to chooses to move or dive. The current, she claims, would drag us along like a child’s toy - and from the size of the shadow in the water, I believe her."
-Captain Drenk Eirnwetr, log entry
To describe a leviathan is to describe a living creature, a landmass, and a god all at once. Immense beyond comprehension, the leviathans are the water-dwelling cousins of the Dragons which dwell on the land and in the skies of Kuramen. Far more massive than the Dragons, as even with magical power a Dragon can only get so large before collapsing from too much bulk, and the flying ones must be smaller still, a leviathan is a living landmass. The smallest known to the Mortal Races are still leagues across, their bulks so vast that they fill the fathomless depths of the ocean’s deepest chasms. Ocean currents flow around them, the might of the water unable to even begin to trouble these oceanic deities.
Most of the time, the leviathans hang motionless in the sea, at depths so great that the pressure and cold is too much for even the aquatic Elen, seemingly dormant. None believe them dead, however, as every now and then one will stir into motion, each stroke of their flukes taking a day and sending them farther than even the swiftest of ships.
Cousins of the dragons, players in the Greatest Game, yadda yadda.