Black n White or Color ?

That's a question I've been asking myself quite a lot for photography. I particularly use to like portraits in B&W, then I discovered scenery in B&W and all the light-games you can do with only 2 colors.

When I picked up underwater photography (in a very amateur way I must confess), color was obvious.
But, seeing some posts on ClulbSnap and thinking about it in some more details, the question came down underwater as well.

Is there a "correct" answer to this?
I actually don't think so, it's all a mater of taste and preference after all, isn't it?

So what do you think?

For some batfish, color or B&W

And for a Whale Shark?

That might just be a question of taste...