Nice looking work.
Not sure about the head proportion though, seems a little big.
Fishermen are hardworkers, so in my opinion it should be reflected a bit much into your project. I took those three references to illustrate my point.
(You probably used it yourself, am I right?)
First and second images are alike and your work gets near those images. But, because there is always a but, their clothes don't look brand new. I'm not a big fan of always putting dirt into 3d textures but it seems it could add character to your project since fishermen are outdoor people who works hard all day long. [EDIT: The clothes also look too straight, not worn enough. I'm not saying to put holes on 'em but maybe loose them a bit.] Those two pictures also show a person with a neck that has been bent by hard labour.
Since you said you like the mysteries of the sea, the design of the third picture could give a mysterious sense into your project with the good lighting. It is also more cliché in my opinion.