Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a deep water stimulus, being immersed in standing deep water throughout the life cycle.
Source:
GOC:mah
Comment
Note that this term should not be confused with 'response to flooding ; GO:0009413'; which refers to immersion in water on a shorter time scale.