Here is a tutorial on how I made my animated ocean scene on Sketchfab
by using animated modifiers and shape keys in Blender.
Here is the scene I am talking about.
First add a mesh object.
I used a plane but you can use any mesh object, like a cube, sphere or the monkey.
Select the object and click on ‘Add Modifier’ and choose the Ocean modifier.
Animating the Ocean Modifier
To animate the Ocean modifier, set the current scene frame to 0.
To do this, hover over ‘Time’ in the ‘Modifier’ panel and press the ‘i’ key so time 0.00 is the key frame for frame 0.
Then go to scene frame 1