Ichthyosaurs are classified grade 7 monsters in Three Ways to Survive in a Ruined World.
Appearance[]
They are gigantic snake-like monsters, also known as sea serpents. They have glowing red eyes, a mouth full of sharp teeth, and are extremely dangerous when enraged. The more powerful ichthyosaur, sea commanders, are larger.
Description[]
There are numerous ichthyosaurs in the sea during Main Scenario 2, but they don't attack incarnations due to not being a part of the scenario. However, they do destroy the bridge. Yoo Joonghyuk throws Kim Dokja into a sea commander, to see if he would survive.
Abilities[]
It is difficult to leave the inside of an ichthyosaur, but not impossible, as Kim Dokja demonstrated through creative means.
Trivia[]
It's possible they are inspired by the real life ichthyosaur. However, this marine reptile from the Mesozoic era physically resembled dolphins instead of snakes.