The Easy Environments series for DAZ Studio and Poser combines high-resolutoin Skyboxes (6x 4096x4096) with terrains fit for close range shots.
Close-to-the-floor cameras and steep camera angles, which would be impossible with skydomes and seemingly huge landscape shots ... it’s all possible with these sets.
This set offers a rarely done environment: the ocean, on a cloudy day.
The rock itself has a lot of nice spots to place your characters - a small beach, surrounding boulders and the top.
The rowboat is also included as a separate prop and can be used like a small environment of it’s own.
The water plane prop can be used to embed any object into the skybox.
The file format is Poser .PP2, with DAZ Studio material presets, which load automatically.
Get more info and tips here (recommended reading to understand how water and skybox work together): http://flipmode3d.com/easy-environments/