Dreams involving family members, especially parents, can evoke strong emotions and often symbolize deeper feelings or concerns in your waking life.

In your dream, the imagery of your father being drowned and having his limbs pop off could represent feelings of helplessness or fear regarding his well-being or your relationship with him. This may indicate a fear of losing him, either physically or emotionally, or a feeling of being overwhelmed by situations involving family matters.

The scene where your father is held captive by strange men in black may symbolize feelings of powerlessness or the sense that there are external forces or influences in your life that are affecting your relationship with him. These "men in black" could represent authority figures, societal pressures, or even personal fears that feel oppressive.

Overall, this dream may be prompting you to reflect on your relationship with your father and any underlying concerns or anxieties you may have regarding family dynamics or your own sense of control in life. Consider if there are any unresolved issues or feelings that you need to address. It might be helpful to communicate openly with your father or seek support if you're feeling overwhelmed.