Reaper leviathan

When you were trying to get in the Aurora spaceship in subnautica you accidentally went to the back and then you found a strange creature called the Reaper Leviathan. the creature then started destroying your seamoth. After he destroyed your seamoth the strange creature attacked you then you are at 12 hp (A CAT FROM BATTLE CATS CAN ONE SHOT YOU AT LVL 1.) Then luckily your seaglide with 100% battery is in your inventory