This painting is referenced on page 103 of Expressive Writing: Words That Heal. The black and white version is on page 104.  Below is a brief summary of symbolic meanings contained in the painting. For a more comprehensive description of painting symbolism, see page 103.

Ocean = body of this cancer patient
Cancer eating fish = red with line or touch of green.
Red and Green = life or life force.
Brown area = muddy, murky ocean bottom.
Wavy dark lines = dark blue pure water.
Two linked ovals = goggles or glasses suggesting benign watchful presence.