Yes, but the key limitation is physical separation between the lens and the water. A wide-angle lens helps, but the clean split look usually comes from using a dome or other clear enclosure that creates an air space in front of the lens. Without that separation, the waterline is much harder to place cleanly and the result is less distinct.

A DIY approach can work. Community suggestions include using a small clear plastic dome or even placing the camera in a fishbowl or small aquarium so the lens shoots through the glass with an air gap. To reduce reflections, block stray light around the lens area with something dark, and use live view if possible for framing.

For shooting, use the widest focal length you have, stop down to a moderate/small aperture for depth of field, and expect the waterline to move with waves, so take many frames. Positioning the camera so the lens is near the middle of the clear enclosure can make it easier to place the split line.

So: possible without a commercial dome port, yes—but some kind of clear barrier creating air space in front of the lens is the main ingredient for good results.