“He had taken down the picture of his dead wife because it made him feel lonely & it now lay on the shelf underneath his clean shirt.”
To me this symbolises her purity to him & also his love.
The Marlin encompassed his wife, the boy & with it’s catch life flooded back into his veins. It’s loss symbolises his loss of life & hope. In a sense he died with the Marlin’s demise by sharks.
A masterpiece.