ArtStation Challenge Lightbox Expo: Box of Mystery Environment Design -1 Artwork - Turtle Submarine

ArtStation Challenge Lightbox Expo: Box of Mystery Environment Design -1 Artwork
Turtle Submarine in Underwater it's my Box of Mystery.
One of my submissions for the Box of Mystery challenge. At the first environment I wanted to create old turtle submarine, which located in underwater. I inspired by old turtle submarine 19th century.
It was a great experience take a part in the Challenge.
If you wanna check out the whole thing you can find it here:
https://www.artstation.com/contests/lightbox-expo/challenges/85/submissions/56947?sorting=survivors

Different various of color. I  chose green.

Different various of color. I chose green.

 Render

Render

Create underwater volumetric light and put fog effect.

Create underwater volumetric light and put fog effect.

Texturing some texture with jpg and also procedural texturing. Texture in plane is procedural texture.

Texturing some texture with jpg and also procedural texturing. Texture in plane is procedural texture.

Modeling scene.

Modeling scene.

I modeling submarine and inspired by old turtle submarine 19th century.

I modeling submarine and inspired by old turtle submarine 19th century.

Also I modeling and sculpt underwater plants and rocks.

Also I modeling and sculpt underwater plants and rocks.

 Heres some sketches I did in my sketchbook. 

I sketch underwater plants and some rocks.

Heres some sketches I did in my sketchbook.

I sketch underwater plants and some rocks.

I create turtle submarine.

I create turtle submarine.

I have been gathering some inspiration and thinking about concepts.

I have been gathering some inspiration and thinking about concepts.