Bathophobia is an abnormal and intense fear of deep 
places or looking into deep places. A person with 
bathophobia would also have a fear of heights, which is 
known as acrophobia (or altophobia). People with 
bathophobia will usually become nervous when thinking 
about falling from heights or being consumed by objects 
with significant depth (e.g., deep caves, staircases, 
escalators, a sink hole, a well, deep water, or long and 
dark hallways). People with bathophobia would be fearful 
around such situations. Some fear of heights and depth 
(even in non-human animals (is natural because it helps 
protect the organism from serious harm. However, 
traumatic events involving depths can make the fear 
much worse. 
 
Knowing of someone who suffered a traumatic event involving depths (e.g., drowning) 
can also cause the condition. Never learning how to effectively deal with depths (e.g., not 
learning how to swim) can also contribute to the condition. 
A phobia is an abnormal and intense fear of something. The main feature of a specific 
phobia is that it is a significant and persistent fear of a clearly known, specific situation 
(such as responsibility) or specific object (such as a deep place). In specific phobias, the 
feared situation or object is avoided or endured with intense anxiety and distress. 
 
Exposure to the feared object or situation almost always causes 
anxiety. People with specific phobias realize their fear is excessive 
or unreasonable. To be diagnosed with a specific phobia, the 
person's avoidance, anxiety, or distress about the source of fear 
needs to significantly interfere with his/her normal routine, job 
functioning, school functioning, or social functioning. Alternatively, to 
be diagnosed with a specific phobia, the person needs to have 
significant distress about having the phobia. Bathophobia comes 
from the Greek word "bathos" meaning "depth," and the Greek word 
"phobos" meaning "fear." Put the two words together and you have 
"fear (of) depth."