Dreams about sharks arise from a lurking threat
Dreams about sharks most often carry meanings about threats in your life, but as with all dreams the context is important.
Interpretations
A dream about a bear requires a closer look at the animal
The behavior of the bear and its, ahem, bearing are significant, because they depend on what your mind brings to bed.
A dream about flooding implies a loss of control
Floods represent forces that feel out of your control, so you may be overwhelmed by something or someone in your life.