I noticed a black widow silhouette in the ocean...
Well, at least I thought it was. The scene occurs when the Catherine character "saves" Alex from drowning. After the two share an the exchange, the camera focuses on a wave reaching the beach. Within the wave, a shadow of a palm tree appears, which looks like a black widow spider. Since the camera fixed on that spot while an ominous music score is played, I believe this was done intentionally.
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