Page 11: Mermaid Beach by Douglas T. Araujo

After the death of their child, John and Claire go on a much-needed vacation.  They don't heed the warnings of the old man who tells them to keep away from Mermaid Beach.  Bad idea.
 
Also, Big and Rish talk a little bit about unhappy endings, and it turns out that Big has at least one irrational fear after all.