I Just Changed My Job as a Fisherman and Caught the Mind Cube at the Beginning?

Changes in the sea and invasion of sea beasts. Humanity has begun an era of maritime careers for all, and everyone over the age of 18 can have the opportunity to switch to maritime careers. Xu An came through time travel. But unfortunately, he changed his job to a career in maritime life - fisherman. Just when Xu An thought that he could only be a fisherman every day in his life. But he caught the first shot - the Mind Cube! And opened a hidden profession - Blue Commander! The legend of the sea - Lafite II - attacks! The Legend of the Sea - Warspite Kai - attacks! The legend of the sea - Unzen Xuan - attacks! That's it! One after another, battleships with powerful combat power leaped above the blue sea. A garrison independent of the dangerous sea. Countless sea professionals are watching! Confused! Shout out to cheating! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.