Adjusted the Octopus boss's design

Alpha Net 8.3.5

1 Improved the design of the Black Octopus boss

2 Fixed a bug where the Black Octopus couldn't move

3 Fixed a bug where the Black Octopus couldn't die

4 Fixed a bug where ocean plants couldn't spawn

5 Fixed a bug where the skin's shader changed after burning

6 Adjusted the ocean background shader