Dreadnautilus

The Dreadnautilus is a Hardmode mini-boss summoned by Fishing during a Blood Moon.

Attacks

 * It spins around the player for about ~3 seconds.
 * It fires a spray of red projectiles at the player.
 * It briefly glows red and summons three red symbols.
 * It spawns multiple Blood Squids.

Tips

 * Summon weapons are useful for handling the Blood Squids while the player focuses on the Dreadnautilus.

Trivia

 * It resembles a.
 * Its name is a portmanteau of "Dreadnought" (a class of warships) and "nautilus."
 * Its original name was "Blood Nautilus" in an official trailer.