Is there a fear of large bodies water at night?

Yes, there is a fear of large bodies of water at night. It is called nyctalgia. Nyctalgia is a morbid fear of night or darkness. It is different from nyctophobia, which is the fear of the night itself. Nyctalgia is specifically the fear of what might happen in the dark, such as being attacked or lost. It is often associated with anxiety and depression, and can be caused by a traumatic experience or by a combination of genetic and environmental factors.