In this world, giant sea creatures whose sizes rival ships are commonly called "Sea Monsters".
In general terms, all Sea Monsters are Extraordinary Creatures. Even the smallest Small Species are at least 30 meters long, while Large Species typically range from 50 to 100 meters long. It's important to know that the largest human-made warships of this era, Level 1 Battleships, are only 70 meters.
The Giant Species typically measure around 500 meters, longer than seven Level 1 Battleships lined up end to end.
Above them, the top-tier Sea Monsters are called the "Sea God's Son", with lengths exceeding a thousand meters, comparable to a small island.
The current Large Species "Sea Demon" has a main body length of eighty meters, not to mention dozens of arms that extend over twice its body length, obviously at the peak of Large Species, with even one foot already in the Giant Species category.
