Thalassophobia (Greek): thalassa, 'sea' and φόβος, phobos, 'fear') is an intense and persistent fear of the sea or of sea travel. Thalassophobia is a clinical phobia generally classified under specific phobias, fear of a single specific panic trigger.
If you can successfully scroll through to the end of this list, you're probably not scared of the unknown depths of the seas. However, if you are one of those people who felt uncanny through looking at all of these images who might be suffering from Thalassophobia!