以下文章出自: http://www.webdesign.org/photoshop/drawing-techniques/underwater-sunset.14281.html Underwater Sunset Author: TutorialSite.Org More by this author Added: Mar 08, 2010 Rating: Level: Experienced Software: Here's a detailed look to help simulate underwater scenes. I first began with a 500x500 size document preset, set the foreground color to a shade of blue (I used #1680D1) and the background color to a dark blue (I used#0C1B6C). Create a new empty Layer (Shift + Ctrl + N (Mac: Shift + Command + N), just above the default document background Layer. Activate that new empty Layer by selecting it in the Layers Palette. Next, select the 'Gradient Tool (G)' on the Toolbar. Then notice up on the Options Bar for that particular tool, the new options that are available, particularly, the 'Gradient Preset Picker'. Select the 'Gradient Preset Picker' to define the gradient to use for this effect. I will use the 'Foreground to Background' pres