I got a question for you: Shortly after the death of her mother, medical student Nancy Adams travels to a secluded beach in Mexico, the same beach her mother visited while she was pregnant with Nancy. Carlos, a friendly local resident, gives Nancy a ride and drops her off at the beach. Nancy joins two other locals and the three surf for several hours. Taking a break from surfing, Nancy video-chats with her sister Chloe. When she talks to her father in an emotional and strained conversation, it is revealed that her mother's death caused Nancy to consider dropping out of medical school.

Answer this question: where is the movie the shallows supposed to take place?
Let's think first:
The relevant information is: Shortly after the death of her mother, medical student Nancy Adams travels to a secluded beach in Mexico, the same beach her mother visited while she was pregnant with Nancy.
Therefore, the answer is a secluded beach in Mexico.