Hello lefebvredl.
Welcome aboard.
The file data/Misc/impurity.dds contains the "plancton". Try open this with i.e. PaintNet, make it transparent and save.
The blurry underwater look could be changed by editing the data/shaders/HDR/DOF_PS.fx file.
Open in notepad and change to:
-------------------------
#include <data/shaders/hdr/common.inc>
float2 g_focalDistance : register(c0);
struct PS_IN
{
float2 Tex0 : TEXCOORD0;
};
float4 main( PS_IN In ) : COLOR
{
float depth = tex2D(tex1, In.Tex0).r;
float interp = saturate;
float3 color = tex2D(tex0, In.Tex0).rgb;
//return float4(depth, depth, depth, 1);
//return float4(interp, interp, interp, 1);
return float4(color, interp);
}
-----------------------------
This is from a mod by vickers03.
In the Dynamic Environment 2.1 the data/Misc/underwater_disp_map.dds deals with another underwater effect.
Try a combination of this three files should be clear underwater, maybe Dynamic Environment 2.1 light as a base, then the impurity, then the shader (fx) file.
Regards.
Echol
t.